Ocpmovie's Classic Edition
ADigitalMan's ROTJ and ROTJ 2.0
and
My own ROTJ edit, which borrows heavily from the above
Ocpmovie's version removed almost all of the Special Edition stuff, making it almost exactly like the original version.
Adigitalman's takes a more experimental route, with a custom ending and Jabba rock song.
Mine uses a lot of both, to get an OT/SE hybrid, without any other creative changes. (Btw, in Ocpmovie's edit, he fixes the pink and green lightsabers. Mine does too, borrowing from his work.)
Hope this helps!