Originally Posted by
fa63
Sure there is a value proposition. By most accounts, it sounds like the accuracy issues have been addressed with the 3rd generation unit. So even if you paid the $700 for a full-blown iBike, what you end up with is a reasonably accurate tool (actually, looking at the comparison done by VeloNews, very close to real power meters out there) that you can easily transfer between bikes, and use with any wheelset your heart desires. Yes, the weight of the wheel doesn't matter for 99% of riders, but why should you deprive yourself from power measurements if you feel like riding your Zipp wheels on the weekend (or during a race)?
Go to a race, or the local training ride. Count the power meters. My bet out of 100 riders, you'll see 2-3 SRM's, 6-8 Quarqs, 15-20 Powertaps, and 0-1 Ibikes.
I don't see anyone buying the Generation III Ibikes. I do see a lot of the cheaper PT's. I think that tells you something.