I;m very pleased with the Plustek 7600
although I haven't used any other dedicated film scanners, so can't make any comparisons, the results are very satisfying. From what I understand from some reviews, the plustek and the Reflecta Proscan 7200 should deliver comparible results, but the Reflecta has faster scanning times.
My main use so far has just been scanning some test rolls for myself and old slides from my grandparents. From these I made some test prints, which look great at A3 and A2 sizes, from film between iso 100 and 400. I made one A3 print from iso 800 negative film which looked great, but showed some grain. This is of course only my opinion, you may have completely different demands from prints or be more easily offended by the faintest hint of grain.
It isn't the fastest scanner, both with manualy feeding the film and with scan times, but as I've mentioned, I like the results so far. Slides scan easiest, followed by negative colour. B&W is the most difficult for me. I still have absolutely no idea what I'm doing, so if you know more about scanning it should be possibe to get better results I think.
If you would like to see some examples from my scans, I've uploaded some to my flickr account. I'd have to add you as a family contact, because I don't want these test shots in my stream. Let me know.
Cheers,
Daniel