The score for Glory was stolen, I knew that even as a teenager although memory doesn't serve me with the particular source; I think it might have been Carmina Burana, don't quote me, but I certainly remember thinking then how derived it was. Perhaps it was the director's adherence to the temporary track, who knows...
The Wrath of Khan music may be what it is, but I was always impressed with the tutti cue where the two ships are confronting each other in orbit of that planet (Seti A V?).
Horner is a grand larcenist but his score to Aliens - in my opinion his best of the ones I know, is homogeneous and exemplary! Another good job he did was the whimsical, minimal score to one of the best light films ever, Sneakers.