In all honesty, I agree that TOS does have the best music out of all the Trek TV series, most especially The Doomsday Machine theme. But of course, the Fight Music has become an inconic part of pop culture. The music in the other Treks is pretty bland. Pretty decent opening tunes, terrible episodic music. Hell, the TNG episode with the most memorable music is The Best of Both Worlds, and that was the result of Ron Jones knowing he was leaving and not having to worry about consequences for disobeying Berman's music edict.