I find it to be a toss-up between Jerry Goldsmith's glorious The Motion Picture and James Horner's intense The Wrath of Khan score. Both complement each film perfectly, with the former surpassing its film counterpart in quality, although that's more of a dig at The Motion Picture as a film than anything.
Both are respected as two of the greatest sci-fi scores of all-time, if not some of the best of any genre, and they both have two of the greatest composers in film history. I don't think anything reaches the heights of the first two entries in the series. Although, Cliff Eidelman's work in The Undiscovered Country is one I find myself listening to regularly. I don't see it brought up all the time in these kind of discussions, but I think it really is a standout.
Both are respected as two of the greatest sci-fi scores of all-time, if not some of the best of any genre, and they both have two of the greatest composers in film history. I don't think anything reaches the heights of the first two entries in the series. Although, Cliff Eidelman's work in The Undiscovered Country is one I find myself listening to regularly. I don't see it brought up all the time in these kind of discussions, but I think it really is a standout.