My uncle owns his own gutter company. They do real good quality work. I worked for him while I was in college to help pay the bills.
Also, as far as other recommendations:
Make sure you get seamless aluminum. Steel is cheaper, but it rusts. And if it has seams it will leak.
Here's the company info:
J&J Gutters (770) 788-2384
Just let them know you got the recommendation from me.