Seeking recommendations on a 35 mm slide and negative film scanner in the < $300 price range. I have googled the following: 1- PrimeFilm 1800i USB Film Scanner 1800 dpi $100.00 2- Konica Minolta DiMAGE Scan Dual IV 3200 dpi $220.00 3- Plustek OpticFilm 7200 Film Scanner 7200 dpi $190.00 Any comments or recommendations on these three product or any other film scanner greatly appreciated.