The screen is beautiful and the number of features it has is pretty extraordinary. The battery life is questionable... it needs to be charged nightly.
The S60 Symbian OS is not very user friendly, but it is feature rich. At times it can be sluggish.
The camera takes decent pictures outside, but horrible indoor pictures. You can use the camera without opening the phone which is cool. Same goes for reading incoming text messages.
I've used this phone as a modem for my laptop and gotten almost 400Kbps. Not bad at all. Having that capability has come in very handy a few times.
The browser is weak, but since it's a Java-compatible phone you can download the Opera Mini browser which is awesome.
Eh, my phone is better.
The word on the street is that the battery life sucks on this thing. That is the big thing holding me up.