I had Lasik in 2006. My vision before Lasik was 20/40 and 20/50. My vision now is 20/20 and 20/15.
I couldn't read the clock on the wall before the procedure... when I got up, I could.
The whole "you can't drive, can't touch your eyes, can't get them wet, or look at anything bright (had to wear special goggles to sleep and shower, and special sunglasses when out) for 5 or 7 days (or whatever it was) after the procedure" kinda sucked... but is very much worth it now.
My Dad had it a year before me and his reverted back. He's since had another procedure done and is doing well on it right now. My sis had really bad eyes and she had PRK in 2005... I don't know how her vision is, but she doesn't wear glasses anymore... so it can't be that bad.
My eyes are SUPER sensitive... I couldn't use contacts because I couldn't touch my eyes. The clamps they used to hold my eyes open sucked for sure... but it's well worth the $$.
There is still a little halo/glare when driving at night on oncoming cars... but that was explained to me on the front end, and I think it's just part of it.