Okay, I admit... since originally posting this (weeks ago?), I've gone back-n-forth trying to decide whether this was a worthwhile investment... It DOES sound/look cool as heck, but after reading/re-reading reviews from buyers on sites like Amazon.com and others, I have lingering concerns.

Do any of you think your speed is inconsistently measured? (the ones w/o the cadence/speed thingee) I've never had a wireless device -other than a hr strap- so it seems a little disconcerting to hear reviewers say its wrong a lot. I'm planning to just get the HR version - I don't really care about cadence anymore after having the PowerTap for so long. (its off the bike now)

Do you find the altitude measurement to be inconsistent? That's a lot of the reason why I'm considering this one over others. I wanna track climbing and know the gradient of the hill I'm on.

Mostly, I just want reassurance that you guys have been happy with the product (other than it just being cool, I mean). You don't feel like you need a cheapo Cateye on the bike to make sure the Garmin is right?

Sorry to be so questioning..those darn reviewers made me second guess my choice. But...I need to make up my mind quickly now b/c at the moment, my bike is nekkid - NO computer! Its like riding blind! It was nice for the first hr of my Wed night ride, but after that, I felt like I was really missing something.