I love the Acutians theme, but let me offer what I consider a sleeper pick in the Peltians theme -- specifically I feel the second half of the song (after the shift 1:33 in) is arguably the best part of the entire sountrack. The track wasn't even in my top five the first listen through, but man it has grown on me over time. Reminiscent of certain Radiohead tracks in that way (in that the best part of the song isn't given to you right away, you have to sit and wait for it -- earn it even).The Skylaxian, Andor, Burlust and Evuck themes (or at least portions of) also have special places in my heart -- but my vote goes to Peltians for that build with the guitar.Edit: I take the sleeper line back, Peltians are currently in second place in the early going.