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I use an Epson v600. You can get refurbished v550's for about $120. I like them, you just have to get yourself acquainted with how the software works. I'm happy with it. I haven't calibrated the sensor to the height of my film, since I don't have any non newtonion glass panes to but behind them to keep them at a constant height, but results are fine.
I read that most folks who try the DSLR method of scanning film just give up on not achieving the sharpness they want or can't get the colors right.
Anyways, from the v600 - I get good 5x7 prints from cheap Kentmere 100 film. I mainly shoot black and white. Color is too expensive for me.