I use an AS M Line 2 in studio with db on a camera stand (slow, but suppose to be); for portrait work, a RZ-D on tripod; and landscapes sometimes an Alpa Max on tripod--all of these setups demand the use of a tripod for best results and a slower contemplative approach. I compose on the ground-glass with the AS and Alpa.
For more fast-paced, candid, and sometimes casual shoots, it is my D700. The D700 sometimes gets on a tripod for stitching, but it is my go-to camera for anything that can have a higher ISO and not demanding of enlargement. I do love the shooting work-flow of the D700!