I don't know why Dave keeps bringing up the Velotron in this thread. I don't know why Dave brings up hardly anything he brings up anymore.

Personally, I have been exceptionally pleased with my Kickr. I use a Quarq and also have a set of Vector pedals on a different bike. At first, I was confused by the disparity between the Kickr and my Quarq. Because I'd had the crank for a long time I definitely consider that to be MY gold standard in terms of accuracy and precision. I followed all of Wahoo's recommended procedures but was still experiencing quite a lot of difference right from the get go (immediately after the first spindown). I then, once I talked to Wahoo about it, started doing a second spindown about 10-15 minutes in and experienced almost exactly equal numbers b/w my Quarq and Wahoo. Yesterday I was doing a 6x5mins at 108% and on the 4th interval the #s were down a bit but I did a spindown after and everything got back to normal.

Personally, I didn't buy the Wahoo to be as accurate and precise as my other powermeters (I know, the horror, posting that here on ST). I got it because of its integration and ease of use. The fact that mine actually is pretty damn close to my Quarq (within 2-3%) is a nice bonus. Wahoo exceeded it's previous year of sales in 2014 by over 200% I believe (or something equally ridiculous). I think they will get everything sorted to the degree that it needs to be sorted.