I'm not much of a photographer, but I've always been happy borrowing my buddies diamage x. There is a somewhat extensive Dimage X series, all of them are quite slim.
I'd take a look if I was in the market for a new small digital.
http://konicaminolta.com/products/co...camera/dimage/
in general
http://konicaminolta.com/products/co...x50/index.html
in particular