The First Contact theme is gorgeous, it’s definitely the winner to me.

Also, as good as the one used in the series is, I think TNG deserved an original theme. They did such a good job stepping out of they’re predecessor’s shadow, yet they were stuck with a hand me down theme from TMP!

TNG was such an advancement over TOS - it wasn't incremental at all, but a massive progression.

I kind of agree too that if there's one area where TNG didn't advance as much as I'd prefer is the music. I like to fall asleep to the TV series audio at night and I converted the episodes to mp3. The strings are very shrill at times though!

TNG all day.

The TNG theme was from Star Trek the motion picture

TMP doesn’t have Patrick Stewart’s voiceover.