Crikey Danny that's a tough call at the moment....the D7000 will be better at high ISo for sure..the D600 even better to much better...if one of the upgrade reasons is LV..then a Used D700 is out as the LV is a tad cumbersome in it..when using Contrast AF.

so what to do..Hmm


your in a bit of a dilemma mate thats for sure ..I went to a D700 for better hi ISO..so I know where your coming from


in all honestly at this stage mate ..I still think a D7000 with a Nikon 24-70 for $2400 is the go ..its a good body excellent lens ...good high ISO and good LV with 39 Focus points it will serve you well for at least 2-3 years before the must have bug hits you again....and for a body that's only about $850 grey at the moment you cant go wrong I reckon.

or if you have another spare $1000 get the D600 and the Nikon lens....I dunno about all the others in this thread..but I bought Nikon Bodies as I wanted Nikon glass...not the other way round