U haven own a DSLR & thinking of getting a Pro version!?
anyway,... not really familiar with Pro range DSLR... here goes...
Canon... from highest range to lowest among Pro range... (own standard)
1Ds Mark II (full frame)
1Ds (full frame)
1D Mark II (APS)
1D (APS
Nikon (all aps)
D2X
D2HS
D2H
D1X
D1H
etc... anyway, go search Dpreview... if u dunno Dpreview... i guess u better start doing research...