The bulb is physically smaller, is all. They will both produce the same number of lumens, given the wattage is the same. They are good for smaller enclosed fixtures. The color temperature of the minitwists is 2700 degrees K. Sylvania offered 3000 K bulbs when I wrote the review, but now most of the Sylvanias are 2700 degrees. 3000 degrees produces a better white; the 2700 degree bulbs are a little more towards yellow. One of the best features of the Sylvania is their circuit. Some brands will flicker if your light switch is illuminated, but Sylvania bulbs don't flicker. If you want a whiter white, (but not towards blue, like a 4100 degree light), see if you can find some 3000 degree CFL's. I put away a good stock of these Sylvanias when they were being phased out.
I don't really believe that they save much money at all, considering what they cost, but the government took away our 100 watt bulbs and these work good in their place. The ones I have bought last about 3 times over a regular bulb but they put out much less heat and you can run brighter ones with less fire danger.
No -- these are the traditional, standard-base bulbs that you're used to seeing in your floor lamps, garage door openers, etc. The thread base is about the size of a quarter.
Thanks for writing,
I am in complete agreement. I had a quite similar experience with CFL's. I replaced all of the incandescent bulbs in my house with CFL's. It seemed a no brainer. The quoted energy savings were impressive. They were said to be more "environmentally friendly". And, they quoted a lifespan of 10 years...guaranteed! So, I replaced them all. Big mistake! The first one failed within 2 weeks. I took it back to Walmart and replaced it. Then, they started failing on a regular basis. I replaced a couple the first month, and several others in the next few months. After 90 days, Walmart said that I needed to contact the manufacturer for the warranty service. Great! Now I have to contact the manufacturer, arrange shipping of the burned out bulbs, and replace them. All so that I can do it all over again the next couple of months. I am now reverting back to incandescents. When one burns out, I replace it with incandescent. My advice?? Avoid these bulbs until real-life reliability and overall costs are calculated and publicised. Then make an informed decision as to whether you want to switch.