I have an opportunity to buy a lightly used Microtek M1
scanner. My understanding is that Microtek is no longer made. Who would service such? I have an Epson 3200 pro that has outlived its usefulness, and the ability to scan my 5x7 negs is appealing.

Check out http://www.microtek.com/
They seem very much alive.

Yep, I was off by about two years. Seems their sales forcasting dudes did not know how good their stuff was.