Just about any brand of strings will do you fine. GHS, Ernie Ball, D'Addario, Fender, etc. Like AT said, it's best to stick close to the gauge of strings that came on the guitar (probably .009's in your case). Elixirs are said to last longer, but they're also considerably more expensive.
I haven't tried them yet, but I've read more than a handful of reviews praising
Webstrings.....very affordable, and apparently decent quality strings.