I have had this phone for a while now, and have never had any problems with it. Although not quite as up to date as some, it still has some great features. 2 Megapixel Camera, always good, nice Mp3 player, and plenty of other handy little features. Adding a 2gb memory card has been great. I have over 500 songs on there and a few large vidoes, plus few hundred pictures and still plenty of room to spare!
The only problem I have had is with playing videos, sometimes they play fine but sometmies they freeze and you just get a blank screen. Then you have to turn the phone on and off to get it going again.
I am on the 3 network, is reasonably fast and good for downloading games and music. All round would say a really good solid phone, dropped it a few times with no ill effects.
So if your not after the all the latest technology, but just a good reliable phone, this may be the one for you!