Unfortunately, all Android users have hade severe buyer's remorse and have had to take SSRI's.
It's a sad sad world
With that out of the way, Just sign up and port your number, you have a grace period to change your mind.
With your level of expertise, Android is awesome, you can mod the holy living crap out of it.
As far as the X, I don't think anyone has rooted it yet, so it's not as customizable as other phones, no custom ROMs yet.
The Incredible is pretty popular for modders, and it's due to get Android 2.2 this week IIRC, the Droid i suspect has the most active community of developers...