Wahoo Kickr
I just received my Kickr and only have a brief chance to ride with it. So far I am impressed with the accuracy (compared with my Quarq). I had been riding on my E-motion rollers with my Quarq but was interested in doing some Erg time workouts so that I can get to the higher end of some of my workouts. With the rollers, it is all self generated which is helpful come spring and outdoor riding. With my old CT there was never any correlation with outside/inside watts which got frustrating.
The response to change in watts is very quick (less than a couple of seconds). There is a sim function where you generate your own watts but I have yet to play with that one. Also able to upload to Training Peaks from my iPAD. Will post more once I get the info.