Anything is better than the stockers haha!
I see you're in Texas. I'd recommend a good set of summer tires but don't go too expensive (it is still a Kia after all)
Do you have the optional 16" rims? or the 15" steels?
195/65R15 < 15"
205/55R16 < 16"
Here ya go, any of these will be better than stock:
http://tinyurl.com/bv2v28j (I hope the link works)
Where in Texas are you? I'm in Austin currently.