I've just posted part 1 of my review of the Plustek OpticFilm 7500i, focusing on scanning negatives. This one's for you, heartyfisher! Just a note, as taishimizu.com is a personal project, I don't maintain the code for Internet Explorer, so please view in Firefox, Safari, or another more standards-compliant browser if possible.
Edit: Admin, could you change the thread name to read "Plustek OpticFilm Scanner Review"? I don't think what I originally wrote is very descriptive.