It's the Galaxy S with 4G, so for all intents and purposes...I have one. Just the Sprint version with the keyboard.
I love it. It does everything I want as fast as I want it. I won't upgrade until they stop supporting it...well, the phone hacking community that is. I'm pretty sure Sprint has already stopped supporting it.
Everything you'll ever want to know about everything you can do to customize your Droid to your liking:
http://forum.xda-developers.com/forumdisplay.php?f=1143