Flatbed scanning of finished prints is the method Ralph Gibson (a.k.a. Mr. Not Dead Yet) uses – in fact, he lays down the prints down straight from the print washer, still wet, which he says improves scan quality), and I get the feeling he uses a tabloid-sized flatbed similar to what I use. This is what you might want if you have a hankering to print beyond 8x10" prints. Otherwise, there are quite a few "normal" (legal-size) scanners to would work just fine, and for not a lot of money.
If, however, you might want to still do some above-average-quality film scanning, I think something along the lines of Epson's V700 series would work quite well.
- Barrett