My impression is that the V500, a much less expensive alternative to the V700 line, might suit you. It also scans up to 6500 dpi I believe.  Of course if you're looking for totally professional results, an Hasselblad Flextight Drum or other high-end scanner is the only true solution; and unless you do large volumes it's probably not worth the cost.

I can swear there ain't no heaven but I pray there ain't no hell. _ Blood Sweat & Tears