We have 3 different levels of macs in our Video area:

+1 new G5 (1.8 dual Ghz, OS 10.3.5, Final cut 4.1.1, 1GB Ram)

+5 G4 (800 Mhz, OS 10.2.8, FCP 4.0, 512 Ram)

+6 G4 (450 Mhz, OS 10.2.8, FCP 3, 512 Ram)

I have tried to keep everything on the same level, but its not so easy to do (especially w/ the new G5s).