Here is my take on it-- find 2-3 respectable clinics that perform these surgeries. Schedule initial consulting appointments. Ask doctors about data/statistics of complications, expected results, pre-op, post-op, what-ifs, machine model they use (yup, I'm that insane) etc. They are not going to lie to you, at least the ones who are ethical, hence pick multiple clinics to get a feel for them. AND THEN MAKE DECISION. Online forums are filled with negative reviews because people naturally tend to complain more in my opinion....
I'm located in Boston and I had my surgery done last year for ~$4k with UnitedHealth covering half. The clinic I chose had lifetime warranty (I hope they will still be in business IF I will need correction in years to come but I think this is highly unlikely). I had astigmatism, about -2.25 prescription.
Getting LASIK was best decision I ever made. First thing I did few months after surgery.....a surfing camp trip. No worries about contacts or glasses.
My only tip-- based on my limited science understanding--is to choose a clinic which uses laser to cut the flap. This I believe (but I might be wrong?) cuts significantly on complications.