Digital BW, The Print

Does anyone have any helpful input as to which machine is better for scanning negs? Most of 
what I need to scan are long (up to 10in) 120 negs that have image all the way to the edge. 
Holders usually don't work because they grip the filkm on the edges and I loose part of the 
image. I have wet mounted on older Microtek (2500f) and this works well because it has 
removable glass carrieer for negs. I know Epson is not equiped this way, and worry about 
putting scanning fluid on only scanning surgace - sounds like a recipe for disaster. Any other 
scanner suggestions? I am planning a 4x5 and 8x10 camera, so going up to this size would 
be beneficial, otherwise I might look at NIKON 8000. Any input would be greatly appreciated.

Jonathan