Digital BW, The Print

I have been considering buying a flatbed scanner of good enough quality to
scan 5x4 negs as the front end of a digital workflow.

I presently scan 35mm in a Nikon Coolscan 4000 and am reasonably satisfied
with the results as input to my ConeTech Piezography/1160 system - photo rag
etc. But would appreciate the possible size/quality/versatility advantages
of large format for landscapes, architectural subjects etc.

I would be grateful to hear of any experience out there and of any good
experience with specific scanners in the prosumer class. I am Mac based G4
and OSX.

 Mike Smith UK