The name "Best-1" describes this feeder and is also the reason I have purchased them for years (currently have 12 on hand; of these 6 are currently in use, 3 are for back up quick fills, and 3 need new bottoms). Received item, as usual from this seller, securely wrapped, but not overpackaged in a timely manner. Nice new touch: lines on the bottle show how many hummers have sipped the provided amount. This is absolutely the best on the market and also very fairly priced!And, yes, the hummingbirds love them.

With this feeder hanging outside my office window, I see hummers feeding on it all day long. It's easy to fill and hang, easy to take apart and clean, and the hummers can't get enough.

Living in the southwest desert, the hummers around here have a particularly hard time finding fresh nectar sources throughout the year. It gets so hot here in the summer that the nectar in hummingbird feeders either ferments or completely dries up within 5-7 days. The feeders here need to be cleaned and filled with fresh nectar twice a week.

With this feeder it's easy and painless to take down, clean and refill.

The hanging hardware works well, everything seems to be fairly durable.

I'm planning on ordering a second one soon, I could not be happier with the one I have.

We live in the Puget Sound area of western Washington state. We bought this feeder specifically because of the supposed inability of bees to get to the nectar, like they did on our last feeder.
After hanging for just three days, you can see the results from the photo. We have seen just one hummingbird come briefly to the feeder but literally dozens of honeybees. They love it! They can stick their whole head in the holes and with their 1/16 inch long tongues they can reach the nectar. Unfortunately, we bought this to feed the birds, not the bees.
It's a well made product and very simple to assemble and clean. But don't purchase it if you think the bees can't feed from it.

So far I have yet to see any hummingbirds at this feeder. However, this could be a function of migratory patterns. Last year around July and August they were daily present at my old "cheap" feeder. I will update around that time of year if facts warrant modification.
UPDATE: July 25,2015
I have concluded that it was not the feeder but the migratory patterns of the birds that explained their absence. For the past 3 weeks they have been at this feeder intermittently every day. This feeder is easy to clean and yellow jackets and bees can not reach the nectar unlike my cheap bird feeder (you know the one with the yellow flowers surrounding the nectar port) which apparently leaked at the seams and attracted these pests which were anathema to the hummingbirds and created concerns about being stung for me. I would give it 5 stars were it not for the concerns raised about bird safety which I am unable to verify or dismiss. The hummers seem to love perching while they consume the nectar and do not have to expend energy hovering while eating as they did with the cheapo bird feeder. All and all, a very good feeder that is reasonably priced. Simple in design, effective once deployed. Pointer: you do not need to fill the feeder up with nectar; I find that one fifth of a bottle or even less is all that is needed and reduces waste. See my photo for consideration.

The Best-1 feeder is one of my favorite feeders. I have been using the Best-1 feeder for about 20 years. I purchase several each year for attrition (occasional clumsy breakage) and to give as gifts.

I DO NOT USE THE FEEDER'S BASIN COVER which has holes that comes with this feeder and 'sits' between the red dish and the glass jar (see this deadly reason and reason for 4 star rating BELOW.). I just omit the cover and fill the jar with sugar water (see recipe below), then screw on the red basin/dish and when outside next to the hanger, invert quickly then hang. The hummingbirds learn to drink from the open uncovered red dish. The uncovered dish is so deep that insects (e.g., bees, ants, gnats, wasps, etc.) do not get in unless the feeder goes dry.

The PROBLEM WITH THE BASIN COVER FOR the Best-1 feeder (4 stars) - may or may not happen. I DON'T USE the cover of the dish with the holes, as SOMETIMES, Hummingbirds HAVE GOTTEN THEIR BILLS STUCK IN THE HOLES OF THE BASIN COVER. (I've seen them try to avoid an aggressive bird while feeding and pull out their bill at an angle and get stuck. I have seen them flying off after freeing themselves on their own, or remain stuck (struggling) until I free them. I have also seen them die instantly or eventually after getting stuck. I have heard that beveled holes helped, which I do not recall the earliest feeders covers having. These feeder covers DO HAVE BEVELED HOLES, but think still an issue, though likely less so, as I tried again! One dead bird is too much. I just don't USE and don't NEED the basin cover with the holes.

It is important to not put out more sugar water (food) than can be CONSUMED in a DAY and DISCARD unused sugar water daily. Start fresh daily. (Zoos change much much more often, minutes.) If don't change daily, the sugar water will thicken/concentrate and the jar and dish will get moldy/UNHEALTHY!!! If make surplus sugar water, keep in the refrigerator. CLEAN the feeders daily to prevent mold on the inside of the jar and red basin (not pretty -REALLY!) and outside of the jar. (Prevent insects from being attracted to the dirty outside of the feeder too. Hummingbirds are aggressive and will chase off another hummingbird, so the fleeing bird can be seen spitting on the feeder, so the outside of the jar and dish become dirty/sticky too. Doesn't seem to be an insect or mold problem, if jar cleaned daily.) I wash the feeder daily either by putting the glass jar upside down in the dishwasher (with the hanging wire down swiveled down out of the way of the wand) and the plastic-like red dishes in the upper rack (no heat setting). Alternatively, I wash with the jar and dish with soapy water, rinse with water, then rinse clean with a little distilled (5%) vinegar.)
(During the spring and summer and fall, I put out 1 gallon of sugar water a day in 4 of these feeders (and the left over in 1 additional "flying" feeder (different brand / no perch)).. That is 4 cups/2# of sugar per day or 14 pounds per week or 56 pounds per month!!! (In this habitat, I have put out more sugar water (e.g., 2 gallons/day), and could put out even more, as more birds will come, but I limit it to 1 gallon/day.)
Remember to mix the sugar water: add 4 cups of water (filtered or boiled/then cooled) to 1 cup of CANE SUGAR.. No food color needed. (The hummingbirds will figure it out and the feeder's red base color will attract them.
Note: These feeders will last a very long long time. I do recommend gluing (2 large spots of hot glue or super glue) the open metal band to the glass jar. (Do not glue near the hanger on the metal band, so it can still swing free.). You won't regret. The feeders will last longer, as sometimes the metal bands bend or loosen and the jars become loose (fall/break.) We redo the glue as needed (likely as we wash the jars in the dishwasher.) The perches on the red dishes might also become brittle due to the sunlight and the dishwasher, so replace these about every 5 years, [Wish these were metal (e.g., aluminium, stainless steel bases, etc.)]
Keep all feeders away from windows to prevent collisions with glass. Find ways to prevent windows from reflecting sky and make sure that light from a window on the opposite side of the house is not apparent. (Try to replace windows with "bird" glass, glass that birds can 'see'.) Make sure birds can't see through the house from one window on one side of the house with a window on the opposite side of the house (e.g., close curtains so birds can see glass, etc.), especially in unused rooms. Also paint guy wires (and wire fences) white and remove any unnecessary guy wires and fences. (Think of replacing guy wires and fences with poles.)
Always BETTER TO PRESERVE AND CONSERVE NATIVE HABITAT THAN FEED WILDLIFE!