I love my full frame! The only complaint I had when I first got it I had difficulty with my compositions. It kind of messed me up for a while. So I had to really work, for about 2 months, on getting my comps back to where I felt comfortable again. But that is my own personal issue and not one with the camera!

You can't complain about the noise at high ISO's though. Love that I can go into any situation and shoot and feel confident.
This was taken at 12,800 ISO on Monday night. The only light in the car was from my daughter's DVD player. It's auto white balance and a SOOC shot (resized for web). No noiseware was used.
D3, 24-70 f2.8 lens
ISO 12,800, f2.8, 1/25 (I am pretty proud that it's fairly sharp handheld in the car), 66mm
On one of my pro-photo boards had an article about the comparisons between the Canon 1D, 5DMII, Nikon D700 and D3. The article said that the D700 was the winner. Take that with a grain of salt... but the performance out of both the D700 and the 5DMII is outstanding.