I just bought a new Sony Ericsson K850i and I'm VERY happy with it..
http://www.sonyericsson.com/cws/prod...0i?cc=us&lc=en
It's far from the smallest and slimmest cellphone out there, but size really doesn't matter anyway (for me..

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Lots of great features like 5Mpixel camera, very good readio and MP3 player and a good meny system.
They also dumped the rather poor "joystick" they've used on the previous models (it broke on my old K800i) and replaced it with a button system as you can see on the photo above..
But the main erason why I bought it (other than that I'm a Sony Ericsson "fan") is the turbo 3G (HSDPA) support since I use it as a modem for my laptop when I travel andwork away from home.
Got it working without any problems on 2Mbit, and that's not too bad on a cellphone..
So what cellphone do you use?