So, I collected my new phone (Nokia 6230i) yesterday and my first impressions are that it's really really good.
I use the phone a lot, it's a work phone so I spend a whole lot of time talking on it and I noticed immediately that the sound was a whole lot better than the 6310i I had, that's what counts most.
The screen is bright and clear, the camera is pretty good (expect moblog piccies here soon) and the radio is really good too (not something I ever thought I'd use, but I have and it's good). Mp3 player is really good too. I'm happy with it.
The only problem I have is that my car has an old Nokia car kit and this phone fits on it with an adapter. Phone works fine on the kit but the mp3 player plays through the phone rather than the car speakers. This is a real disappointment, the answer is to get a a proper 6230i car kit fitted in the car but this will be expensive and more than my budget.