I have a D90 and bought one used D70s for my girlfriend. I was quite surprised with the outstanding results that i saw on the PC. With "only" 6.1MP the images are really good, generally speaking. I'll upgrade my kit to a "new" D700 and, by the time that my GF will want to upgrade (she's suffering of very light NAS, because of me), i'll pick the D70s and will convert it to IR.
Nikonians!!! My best investment made after my camera!!!