Well, if that doesn't help your high ISO troubles, not sure that anything will in today's market... ;)

After having played a but with a D3 early this year, I'm sure you'll be pleased with what the D700 has to offer. The available light candid shooting coupled with great high-speed tracking for sports made it a pleasure to work with... I missed the cropping factor on the telephoto side, but really appreciated the true wide angle that FF gives you. I still miss that today on my current gear...

Looking forward to seeing your results with it. It's definitely a nice piece of gear when used by a good photographer...