Originally posted by tuco On the Nikon side of that lens road map, you can optionally look at the new 70-200mm f4 G both at a pocket book savings and a lens you might actually want to carry around.
And you could start off with D AF-S primes. You could buy used 24/2.8, 35/2, 50/1.4 and 85/1.8 D AF-S lenses for about half the cost of a 24-70/2.8 zoom. I haven't had my D600 long but so far my 24-70/2.8 does not get used that much in lieu of some of those primes I've had. I just don't like walking around with the heavy thing but that's me. Your mileage may vary.
Thats a huge issue of going full frame. I went in and loaded my bag with the D600, 24-70 2.8, 70-200 2.8, and the 85 1.4 (seeing as how my pro pentax field kit is K5, 16-50, 50-135, 55 1.4) and the weight was awful. The 70-200 is a huge lens, and it would be my most used without a doubt. I would also spend the extra dollars to get it f.28 over the f4.
I did find the Canon a lil lighter of a kit overall though... I just wish the control dials were better placed.