I really liked Key-Whitman. I had lasik done last summer, and it was a great experience. They provide very personal service. I've heard some of the others move you through like cattle and make you feel like a number. That was not the case at all with Key-Whitman. Plus, as long as you go back to them once a year for a regular eye exam, they provide a lifetime guarantee for your lasik.
If you go, be sure and go to their informational seminar. Not only does it provide good info and let you get better prepared for your procedure, but they do a drawing for one eye done for free. I won that drawing, so I had mine done at half price!