I have a powertap wheel on the way, now need to get the computer in order. The hub is a Pro+

I had assumed (which was dumb) that my phone would be able to pick up the ANT+ signal, because I heard about people doing that with smartphones. I had planned on using the phone for trainer sessions over the winter, and getting a computer at a later date. But, I have a Droid, and from what I can tell, it won't do that.

1st question: Do current Droids possess ANT+ compatibility? I've seen the option in mapmyride, but I have not ANT+ things to try it with...

2nd question: I would like something like a Garmin 500, but if similar features can be had cheaper with older devices, that's good. Not worried about maps. It just has to do the basics plus tracking and displaying power (and HR would be nice). Which older Garmin, or models from another company, will accomplish this?