So: What makes the waterproof motorola defy + good apps not a much better bike computer then all the garmins? You can take pictures with it, call people, navigate and use it as a regular cycle computer.
It is also (as I said) waterproof, so you can ride with it in the rain no problem. I can't see where this solution isn't just as good as a Garmin (besides the battery, but when do you ride more then 8h+?