I have a Schwinn 240 (Made by Nautilus). It's pretty good.
It has 16 resistance levels, ranging from 'is this thing on?' to 'please kill me'
It's VERY quiet
Supports the Polar heart monitor wireless spec (not WIND but the traditional one)
Has standard pedal threads so I replaced mine with clipless pedals
Has a customizable routine
Supports 2 user profiles
40 intervals per workout
CONS (these are all pretty minor):
Says I can average 25mph.
Only one custom routine per user. I would love to have 2.
40 intervals per workout can be too few sometimes. If I want to do an hour with some 30 second high power intervals, I can't really because the interval length is time/40, or 1:30 for an hour. Still much more granular than other bikes I've used though.
Two pages of data alternate on the screen at 6 second intervals. One has cadence, the other current power. I wish those would be combined onto one screen while speed and distance eliminated, because those figures are meaningless.
No power figures other than current power during the ride, and average power afterwards.
The computer was clearly designed for an elliptical machine, it keeps telling me to use my arms at certain points or lengthen my stride.
Doesn't think anyone can weigh more than 300 pounds.
It's the best stationary I've ever used. They have an upright version called the 140. A few minor tweaks and it would be perfect.