KLIPSCH ALL THE WAY!
I was VERY impressed with these babies, have been for years and years. There's still very few sets that surpass them, though the original Klipsch Promedias (which were THX certified, while the GMXs are not) were better. You will not be disappointed, and that's a PROMISE.
I've never been a fan of Bose, as their stuff is always overpriced for the sound quality you get (though they do make the best stuff out there on the high end, that level of quality is also far more expensive than "almost equivalent" systems). Just not my thing, really... but I'm impressed by their abilities in the end.
As for the Creatures... yuck. They sound TERRIBLE--anyone who thinks otherwise must have bought the Soundsticks because they looked pretty. Utterly lacking entire frequencies, the Creatures are the speaker equivalent of the Apple Pro Mouse--sure it gets the job done, but imagine what you're missing! I also find them ugly, though in a sort of cute way, so I understand the appeal. Likewise, the Soundsticks are beautiful, but for $200 I can do quite a bit better, thank you...
My vote is with Klipsch. I was about to buy them, however, when I stumbled upon my favorite secret weapon: Altec Lansing. Consistently proving that incredible sound can hide in inexpensive and downright sexy enclosures, I've been a fan since the Altec ATP3s and found my new speakers in the stunning piano-black MX-5021s. They look vastly better than the Klipsch (in my opinion) and sound as good, if not better. They also have fabulous wired and wireless remotes, much better designed than Klipsch's, and are so distortion-free it's almost unbelievable. I paid $135 for them, and the only set even coming close is the Klipsch at $150.
If it has to be one of these three, the Klipsch beats the other two by so much it's actually pathetic. Add the 5021s to the equation, and you at least have a real decision to make 🙂
Hope this helps...