area detectors

[D.H. Thomas]

Can anyone offer any advice on comparison of the FAST detector (and
Enraf-Nonius rotating anode) with the R-Axis image plate system (and
Rigaku rotating anode)? How do they compare with respect to:
   - sensitivity (eg for small crystals)
   - quality of data
   - versatility
   - reliability ( maintenance)
We are trying to decide which to get. Anyone tried both? (I know that
the FAST has recently been improved).
       Thanks
                Ted Baker
                T.Baker at massey.ac.nz