Same thing I use when I'm at home, a Nikon D700 and a D300 for back-up and "longer reach". I just pre-ordered the Nikon J1 though and I'll be picking up the FT1 (allows F-mount lenses to mount to the new 1 series cameras) when it becomes available. That way I can travel with the D700 and the J1 as back-up and a lower key camera. This new set-up should also allow me to schlep a much smaller bag on board.