What strings do you use?

I've used a few different kinds of strings on my acoustics, and I find myself going back to the standard Martin strings in a medium or light gauge. I haven't experimented much with it other than Elixers, which I didn't care for. They worked pretty well on my bass, but not so much on acoustic guitar. What do you guys use?

I've tried a lot of different strings on my acoustic, but have only been really happy with Elixirs. I like how they minimize the finger squeak. I am playing with a set of Red strings currently. They're copper-bronze, so they're a little brighter and warmer.

What are you looking for? Sound, feel, durabilty?