I use Epson V390... very sharp and the colour is about as accurate as you can get, not very expensive. It can scan 135 films but I can't remember if it does 120 as well. Currently I'm using an Epson DS50000 for my A3 drawings, it can't scan films tho. Generally Epson/Canon/HP make really decent ones, and they are so cheap compared to the cost of having any sort of a decent camera setup. Film is a very tricky issue, because the focus would be a huge problem as the film is not flat (the frame holds it in mid-air and the scanner will switch to that "focus" when scanning films). The problem with cheaper to medium range film-capable scanners is that they don't have focus adjustment or continuous auto focus when scanning films, so although you should be guaranteed to get a decent scan, that's assuming you have your film completely flat and perfectly on the focusing plane, if not then more than often you will get focusing issue with a slightly warped film. You can search film scanning on youtube and there will be better explanation on how to choose a scanner best for you. You could invest a relatively cheap one and see if the quality matches your expectation.

I’ve enjoyed my Epson Perfection V600, for 7 years now and its still going strong. It can scan documents, negatives, slides and photos. It has something like a 6400 dpi range, although I traditionally use 300-600 with great results for my prints. I recently scanned in something about 1200 dpi and it handled it like the pro tool that it is. I found that the scan is so good, it will pick up things that I didn’t see at first glance with my naked eye. You can find it online under $300. I would happily buy this again if mine junked out. My only qualm is the size of the flatbed, but every flatbed gets more expensive after the size of this one.