I got this phone (eventually) as a free upgrade on my contract, and although it is quite big and has a lot of features that I don't even know how to use, I have to say I have been very pleased with it. The main thing I use it for (other than calls obviously) is the camera, which is great. I have a state of the art digital camera and find that the phone one takes just as good pictures and is far easier to carry around.
It has a million and one other features, including MP3 player, GPS,and all the other features you'd expect on a Nokia. It's easy to use and easy to navigate around the menus. The screen is a good size. It has a couple of funky extra features as well, my favourite being that you can programme it to speak the name of the person who is calling you!