Personally, I use the Sony Cyber-shot DSC-N1. It's a few years outdated but it still holds up with its 8.1MP resolution. It's pretty nice because it has a 3" touchscreen LCD display and I got it for pretty cheap over the internet.
However, now I'm thinking of taking my photography to another level by going with a Canon DSLR (not sure which model at the moment) or a Nikon D40x. Not only that but lenses will be similar to polishes... just gotta have them all! LoL... well, maybe not so much.
