I just got a D5100 and I do have trouble with seeing the focus points. My D5000 did not have this issue. I wanted the D5100 becuase of a couple of things it has different from the d5000. Otherwise I would have just stuck with the 5000.
I was impressed with what I read on the D7000, but it is bigger and the whole reason I have the smaller dslr is for travel and weight/size. I have a D3 for most needs.