Well, FF was always big and bulky, the d600 has changed all that and added everything I could ever need in a system, incl. wi-fi and android interface, FF video and DX video and good resolution FF, 24MP for landscape and DX 12MP for sport and reach, wildlife.
An example, the d800 with the 24-120vr4, in FF is much longer than the new 12-35? if I mount the GH3 with the 12-35, I still would be thinking, well 70mm is a bit short, so would take something else, OK another lens in the pocket but if it was the new 35-100 to match the 12-35, all up weight is best part of 1kg, but the 2x lens are 650g, the exact same as the 24-120 which is a 1 lens solution for 24-120 fx, f4 (so f2 required on m43!) and then in dx its 35-180, (f6 dof) so exactly same dof as the new 35-100 but wider and a tad shorter, but I've got 24-180 covered in a vr lens with dof equivalent to f2 on m43 between 24 and 120, and as good or better than the 35-180 on dx.
The cost,
d600, pounds GBP
Body, 1.6k, the lens 0.8k, 2.4k
m43,
Body, your choice, the lens, 1x12-35+1x35-100, aprox £2.0k plus body.
If you add in the flexibility of 1 x lens solution, plus the fact it can replace and better with FF every prime lens in m43 between 24-120 and probably give the others a run, it seems m43 has out-priced itself and it certainky cant live with the performance envelope of FF.
Am thinking of dumping the lot, and moving to d600 completely
This from the man who previously declared DSLRs as being dead and the GH1 as being the best thing since sliced bread (before dumping it for the Samsung NX followed by the Sony NEX followed by the...well, you get the picture.)
So that's it, good-bye DM and all the m43 crew, good and bad, out of here
I anticipate that many users on the Nikon forum will soon be making use of the Ignore button...