My wife and I run a photo studio. Currently we're shooting the D3 and a couple of D300's as backup's.
A new dslr-esque camera that was just released, may also be an option for you. The Casio EX-F1 is an amazing little camera! It will shoot great stills as well as AMAZING high frame-rate HD video! (super-slo mo basically) With the ability to shoot 300 fps/600 fps/ and 1200 fps!
http://www.bhphotovideo.com/c/product/553672-REG/Casio_EX_F1BKFBA_Exilim_Pro_EX_F1_Digital.html
It also features a 12x optical zoom. It is a smaller megapixel camera, but the rest of the features trade off in my opinion.
http://sotaphotography.com
A new dslr-esque camera that was just released, may also be an option for you. The Casio EX-F1 is an amazing little camera! It will shoot great stills as well as AMAZING high frame-rate HD video! (super-slo mo basically) With the ability to shoot 300 fps/600 fps/ and 1200 fps!
http://www.bhphotovideo.com/c/product/553672-REG/Casio_EX_F1BKFBA_Exilim_Pro_EX_F1_Digital.html
It also features a 12x optical zoom. It is a smaller megapixel camera, but the rest of the features trade off in my opinion.
http://sotaphotography.com