There are tons of reviews,here is mine:

Fast fast fast!

Faster then the iPhones,  no contest.
GUI is very close to thee iPhones Polish, maybe one moredoot release and it will be.

Screen is huge, bright, clear.

Wifi works nicely,speaker is loud, close to blackberry loud.

Battery is better than the g1s.

Its too small, too slippery, and difficult to surf (web) on. You'll want a rubber case fr it, no doubt.

Camera and video camera is very very good. Flash included.

Ill post some sample shots of bike pron this weekend.

Its no more expensive than other phones like thee iPhone... just skip the contract