It depends on what exactly you're scanning. If you need to scan film, whether that's negatives or slides, then you can't skimp on cost. D-Max is everything when it comes to the difference between garbage and gold. The type of film you have also determines what you get.
If all you have is 35mm film, you can get by with a film scanner, such as this one. If you have various sizes of film, then you may need a flatbed scanner. Especially if you have large format film. I personally wouldn't recommend anything other than the Epson V850 coupled with SilverFast scanning software. The 850 comes with a "light" version. But it's far better than VueScan, or Epson's own very limited software.
Another option for film that costs far less than either of the above is using your iPhone as a "scanner". This may be the same one. Comes with a color neutral backlight that allows you to shoot 35 mm with sprockets, 35 mm, 120, 110, 127 film. Says you can also use digital SLRs and mirrorless cameras.
If you have no film to scan at all, just prints, then this photo scanner gets the best reviews. Can handle up to letter size originals. So you can scan anything from old 3.5"x5" prints to 8"x10".
