I use regular dvd cases. I scan the original cover, and print it out, and use it in the case. I keep them on shelves, in alphabetical order, so it's real easy to find a certain title. I get my cases for free! See here, to find out how:
http://forums.afterdawn.com/thread_view.cfm/207868
It's fun getting them for free. Others are getting theirs free too. We have a good time, telling our collection stories!
I buy some dvds from pawn shops. Sometimes, the covers are torn or missing. In those cases, I use:
http://www.cdcovers.cc/covers and just print those out.
I never have liked the CD binders. I used to use them for cds, until I saw the binder was scratching the discs, from sliding them in and out. I put the cds back in their jewel cases, and gave away the binders. I never have, and never will use them for my dvds. If you have better luck with them, than I did, that's good. I have 600+ dvds, and like to keep them in excellent condition.
Good luck with your's, however you store them...........