Overrall, I like the phone. Honestly, it doesn't BEAT the iPhone, but it doesn't lag behind in anyway. So if you are on Sprint or do not want AT&T and are switching from that or another carrier, I'd say the Pre is the best you can do.
Conversely, if you don't like Sprint and are trying to switch, switch to AT&T and get the iPhone.
Countering that, if you don't like either carrier, switch to Verizon and get a Blackberry Storm. Won't have iTunes but meh.