I have thought about taking the 705 back especially since I still haven't sold my 305. But the 705 is a much better product than some might think though maybe not worth what Garmin is charging for it. I dig the larger screen and the better navigation. Plus the satellite reception is stronger and more accurate (I think). I also like the fact that I can see the ride profile ad compare it to my other data (speed, HR, cadence, etc). Does the Power Tap offer that? Exactly what data would I be giving up if I decided to return the Edge 705 ad get a Power Tap? Should I go with the wireless version of that?

Hmmm... so when you say that the Power Tap is a closed hub system what does that mean exactly? Where did you find that info? I only ask because I have read/heard a few different things on that subject.