It's weird but ESB arguably benefits the most from the changes because there are relatively few of them. The Falcon landing at Cloud City was done very well. I find it hard to believe Lucas couldn't have done something like this back in 1980 though as it's basically a model with a matte painted background.

Nothing has so far benefited ROTJ. Every single change has little or no redeeming value. The new closing music is okay but the glimpse of other planets makes me wonder if Luke tweeted the Emperor's death or something because those celebrations sure came together quickly. Hayden as Anakin's ghosts, Jedi Rocks, "No... Noooooooooo!", they're all retarded.