RJM
Don't Worry, Be Happy!
It depends on what you value most, RAW fps or burst time till buffer full.
The D7100 buffer 6 frames @ 6fps. Total burst time of 1 sec.
The D300s buffers 20 frames @7fps 12-bit RAW. Total burst time of 2.85sec
The D600 buffers 27 frames @5.5fps 12-bit RAW. Total burst time of 4.9sec
I think only the D3s/D4 have longer burst times.
The D7100 buffer 6 frames @ 6fps. Total burst time of 1 sec.
The D300s buffers 20 frames @7fps 12-bit RAW. Total burst time of 2.85sec
The D600 buffers 27 frames @5.5fps 12-bit RAW. Total burst time of 4.9sec
I think only the D3s/D4 have longer burst times.