i have a need for either or both - flatbed or film scanner. i have some (limited number) of prints w/o negatives. and occassional need for a flat scan of some document or other. also lot of old slides/negatives i'd like to digitize for photoshop, home printing or whatever. probably a 10% / 90% split on that... i'm looking to spend $500 or so. i notice the relatively high dynamic range of the epson 4870, of course. will the scans be comparable? for b/w? or should i go with a dedicated film scanner and a cheap (less important quality issues) flatbed? sorry if this has been asked.. has anyone here examined the quality of scans each of these pieces of $500 hardware produce, (or is there something better these days?)