Any opinions about the differences in color between moderately priced
Canon vs. Epson scanners?

A magazine review I read recently (Computer Shopper), called the Canon 4200F
slightly blue/cold, and the Epson 2580 slightly warm. I don't know about
the Canon personally, but my Epson 2480 is easy enough to tweak out minor
colour errors from within the driver so it looks the same on screen as the
original, though I suppose it depends on how fussy you are. It's pretty
close without any adjustments anyway.