Originally Posted by merlinextraligh
this review found a 36 watt difference between the Ibike, and the Powertap. In my mind that descrepency is too big to make it a meaningful training tool. You could train for months to get an increase of 36 watts at LT threshold.
http://www.nyvelocity.com/content.php?id=889
Well there are discrepancies given certain situations, I think they will be addressed though. Regardless I welcome any new player in the market as I do not see myself spending over $500 for a rtaining device.