id go a nikon d40 or d60.
the problem with any of the flash systems you are likely to get is they show up as being too harsh. if you get a dslr with a popup flash you could make a diffuser for the flash which will improve you lighting heaps! the diffuser doesnt have to be anything great, infact you can make it your self. i made mine out of a plastic milk bottle but you can use butchers paper or anything like that as long as its not too thick. you dont want to stop light getting thru you just want to diffuse it
