I would have to put them in order of most-listened-to, I guess.

Star Trek movie soundtracks by
Ian McLean, on Flickr
1. TMP by Goldsmith has to come first. One of the first movie soundtrack LPs I ever bought (with a gift voucher from my 21st birthday, a few nights after hearing how great the movie premiere was from a school friend at my party). Played the soundtrack many times before actually seeing the movie. Then loved it even more.
2. ST IV (because I already owned Rosenman's soundtrack for Bakshi's "Lord of the Rings", so I was very familiar to the style long before ST IV came to cinemas).
3. INS and ST V (tie) - there are parts of these soundtracks that are just magical in the way that they tease out familiar Goldsmith music.
5. ST (2009) - Love this so much. Rousing music, great to write with some Giacchino Trek in the background.
6. ST VI - Eidelman (as producer) had already been involved with an anniversary collection, "The Astral Symphony", which has music from the first five movies, so I was intrigued - especially since Meyer had tried to get the rights to Gustav Holst's "The Planets" suite for VI, which I remember fondly from high school. A great compromise.
7. ST II and ST III (tie) - enjoyable, although ST II took a little getting used to after TMP. Parts are so reminiscent of Horner's "Battle Beyond the Stars" and the "Cocoon" films, and I played those LPs often while waiting between Trek movies.
9. FC - very different Goldsmith to everything else. I had to keep the original release because the extended version omits "Magic Carpet Ride" and "Ooby Dooby".
10. ID and BEY (tie) - I don't listen to these as often as the 2009 film, but I do appreciate Giacchino's work and JJ's ongoing loyalty to him.
12. NEM - nothing really gripping from Goldmith this time, but I do love the end credits that incorporate TOS theme and "Blue Skies" by Irving Berlin. I wish I'd enjoyed the movie more. The whole "Blue Skies" song, sung by Brent Spiner, is on the extended album - and was recently reprised so beautifully and appropriately by Isa Briones (Dahj/Soji) in "Picard".
13. GEN - the one I play least and the main theme I have the most problem recalling. Sorry Mr McCarthy.