I am using this kettle for the last 30 days(Bought it from Wal-M, Sorry Amazon) and i've already used it about 30 times or more to make my tea(I LOVE TEA). So far no leak no problem. this kettle hold 1.70 liters which is about 57.50 Oz.
It takes 6 minutes and 45 seconds (6:45)to bring it to boil at full capacity (1.7 liters)and 4 minutes 32 seconds for 1.00 liter and at minimum recommended capacity which is half a liter(2 Cups) it take 2 minutes and 6 seconds water to boil(I start with water room temprature of 69F and 2500 feet above sea level). That it not bad. I like the idea of the body is Stainless Steel because plastic ones add Odor and chemical to the water which is not safe in my opinion(even though, this unit has some plastic part inside, Like filter or top part of the lid from inside But you can remove the filter if you want). It also has Blue LED light inside! the kettle so you can see if the unit in working or not. No cord is connected to the kettle itself so that's make it very convenient(cordless). I also recommend, Boil water 3-5 times at full capacity to clean (remove manufaturing oil) and disinfect this unit before the first use.
I've heard some other ones they have " Keep warm" function so you dont have to reheat the water after 30 minutes of not using it. When you want to buy any electric kettle research about the leakage problem. since a lots of them in the market prone to leak and that can cause fire. One thing i have to mention is, I use Soft Water so when we boil water over time there are no calcium deposits are attached to the inside container and this adds to the life of any water boiler or water heater. By the way, since this unit has open wide top access, therefore is very easy to clean this kettele. In my opinion, this is a MUST HAVE in every kitchen.
Tip: By the way this item(Oster Kettle BVST-EK5966) and Sanyo model# U-K170S are the same one. So if you planning to buy this one, now you can check which one is cheaper.
I'm sure in up coming months more US manufacturer will add more feature to this type of kettle at more affordable prices, like digital control, digital display, keep warm function and so on....
Also remember to close the lid before boiling water. If you dont close the lid, It will take more time for this kettle to turn itself off.
Update: (Jan. 16, 2010): We still use this kettle everyday (now more than 5-6 times a day actually) still works great. no leak and no malfunction and the performance is as good as first day we bought it. I recommend, if you want to use it only for 1 or 2 cups, don't fill up with water more than 0.5 liter (2 cups). If you dont do that, then you are going to pay higher electric bill for NO reason. If you need to use it again then fill some more water (since this unit it does not have keep warm feature, it does not make sense to boil more than you are going to use in than moment). And since this kettle has window to see how much water has inside, there's no way to turn on this unit without water.(even though it has protection against dry turn on)
Update 2(April 24, 2011): By now I've been using this kettle for the last 18 months and Still working fantastic and we use it many, many times a day. No problem at all. Very happy with my purchase.
Update 3 (April 13, 2012): Still Perfect. No bad taste, No Malfunction, No problem what so ever and i'm using it 8-12 times a day. I own this kettle for the last 2 years and 7 months.