the only thing the D8000 has over the D550 and D6900 is the light filter. especially since the D6900 has the Anti-reflective coating, i would prefer the 59D6900 to the 51D8000 unless in a very bright room.
Hmm... $500 for a light filter. :-) I guess there is always the different aesthetics/styling.. but when you put it like that. Really, that's the only difference!?
thanks re: B&M, makes sense now!!