I guess I'm in the minority by very much preferring the new celebration song at the end of ROTJ. I've always disliked the whiny Yub-Nub, and I was almost getting worried Lucas might edit in Barney the Dinosaur at the end there to chime in with the muppet show singing goodbye. My ideal version of the ending would be the new song with the old Endor only celebrations. (The CGI and particularly Hayden is atrocious.)

As for Lapti Nek and Jedi Rocks, I've never cared much for either song. Again though, the new SE CGI for this scene is intrusive and annoying at best, so in the end I'll opt for Lapti Nek here.