I have changed my view of the ibike. Its great for ride analysis, after the corrections are made. Problem is, for intervals. It may show you are in range of yer power window, but then ya download it and find out it was off by 20 watts. Now supposedly, the Gen 3 eleminate this problem. I just dont know that I want to pay an upgrade fee for the new one when I can get a Power Tap at cost an know Im good to go.