Currently, I have a Nokia 3410. It's an average phone, and gets the job done, most of the time. I'm on Pay as You Go with SFR, a French network which is the equivalent to Vodafone.
My next phone is going to be a clamshell, as it can be very annoying when you don't lock your keypad, and you accidently call someone without even realising it. My next phone, hopefully, will be a Sony Ericsson Z1010,
if they ever release it.
[ More info on Z1010... ]
The Z1010 was announced a long time ago, yet is still to be released. In all, it seems like a nice phone - but obviously we'll see once it's finally released.
The only thing I do not like about the Z1010 is that it is dual-band, and not tri-band; other than that, from what I've read and from what I've seen in photos and so on, it will certainly do very well for what I need done.
When I get the Sony Ericsson Z1010, I also plan to change networks and go with Orange Pro, it's a special package with Orange in France which allows you to call anyone anywhere in the world from your contract. For example, with the contract Orange Pro, I'd be able to call someone in France, Russia, America, send some text messages to people in France, England and China as well as surf the net - and it'd all come out of my contract which is very handy. However I'd have three contracts: standard contract which allows everything, then a €9 text message contract and then a €6 Internet contract. Meaning in total, I'm not paying too much - yet am receiving quite a bit; especially the fact that the prices of text messages in France has just come down.