I know he is talented but I found Michael Giachinno's 2009 score overpowering in a lot of places - like George Lucas said making Star Wars, I'm a believer that a soundtrack should be unnoticed by the audience at it's best.
Or maybe it's because the music sounded like it came straight out of Lost.
So, yeah, I would favor the guy from Hannibal, or Bear McReary, or the guy who did the trailer score - or indeed all of them. I also love me some metal, and electronic ambient music, and ethnic music - so Sitars, Synthesizers and Satan are all game
In fact every episode should open with the Discovery leaving the asteroid to the sound of Deep Purple, Smoke on the Water.
EDIT:
A lot of people have miscontrued this post, so just to clear things up: I do not advocate musical wallpaper - George Lucas's meaning in his interview was not that John Williams was un-memorable - he basically meant
"there's a big difference between elevating the drama and distracting the viewer", to quote another forum member.