Well from an Android user for 6 months now: the apparently make the phone. Also, the custonizatiob that you can have with Android is what I like over IOS.
Find some good launchers if you font like Motoblur (im going to mess with it at first and see how I like it, then go with what I have).
Games are good, and... well it's a phone; there's only so much you can do.
Battery life should be great, so you shoulsnt worry about that. Although I am a heavy user so im definitely going to pick up a separate battery down the road.
Oh and you should definitely get a data tracking program/widget. I use 3 of them right now (3G watch dog, data counter widget, and phone usage).