I don't thing I have a Fav soundtrack, but I like bits of music from them all. If I were to put them together in a compalation CD the running order would be as follows: -
1, The Mountain - ST5 - Went to Yosemite on my Honeymoon and played this piece on the ipod as we drove up to El Capitan
2, The Enterprise - ST1
3, Return to Port - ST3
4, First Contact - STFC
5, Death of the Enterprise - ST3 - only have this as a bootleg
6, Battle for the Mutara Nebula - ST2
7, Genesis Countdown - ST2
8, Leaving Drydock - ST1
9, Epilogue/End titles - ST2
10, Stealing the Enterprise - ST3
11, The Cloud - ST1
12, V`ger fly over - ST1
13, New sight - ST Insurrection
14, Final Fight - STN
15, Jump the Ravine - STG
16, Death of Kirk - STG
17, The inner light - ST:TNG
18, What we leave behind - ST:DS9
19, Archer's Theme - ST:E
20, End Credits - ST4
21, Clear all moorings - ST6
22, Sign off - ST6
Bonus tracks
23, The Enterprise - alternative - ST1
24, Leaving Drydock - alternative - ST1
25, Amazing Grace - Bagpipes - ST2
There are others but these would be on my ultimate collection.