I'm changing my contract so I get a new phone. But I don't know much about phones and I'm too lazy to do research. I only really use it for texts/calls and the odd picture.

Could someone tell me which is the best/least likely to break out of:

Sony Ericsson W850i
Nokia 6300
Nokia 5500
Samsung D900
Sony Ericsson K800i
MOTOKRZR K1 Black
MOTOKRZR K1 Quartz
LG KE970 Shine
Sony Ericsson K550i

At the moment I'm tempted by the K800i, but I'm not sure why. Is that one any good?