I got this model:
Waring Pro, induction cooktop
http://www.amazon.com/Waring-ICT100-Pro ... 272&sr=8-7
It works pretty well so far. it does have a noticeable fan noise, but apparently they all do. It isn't too loud really, but I wish it was completely silent.
My tetsubin holds approx 1.2L, but I usually only fill it to about 1L. on the medium heat setting it will boil this in about 6-7 minutes. On high it goes down to 4-5 minutes, though I usually don't do high. tea isn't always about how fast the water boils
still this is noticeably faster than even the high burner on my stove top.
the only drawbacks I see to this model, besides the fan, is that if it's on and you remove the kettle without turning it off it will beep. Also it beeps with each button press and there is no way to control how loud the beeps are, and they are kind of loud. (1 button to turn it on, and then I jack up the setting 3 times to the medium setting.) The lower heat settings are wacky... instead of heating constantly at a lower temperature, they heat at the same temp as the medium setting but the induction element just oscillates on and off every couple seconds.
All this beats rust on the bottom of my tetsubin though. Plus I can place a towel (or a nice piece of aizome fabric) under the kettle while it's boiling. adds a little atmosphere to the whole experience