Hello, I had lasik a year ago in October. I was extremely nearsighted and slightly astigmatic in one eye as well. The surgery went great for me, although I am one of the 1% who suffer from halo effect at night as a result of the surgery. Basically when looking at headlights, street lights, traffic lights etc. I see a halo around them. The halo's are pretty severe but the effect on my nighttime driving is not very big - basically I'm a little more uncomfortable than I used to be but I can still do it. I have a little harder time telling *where* cars are (which lane?) if they are heading toward me, until they get fairly close.
Everything else has been great. I live in Wichita, KS and the surgery is expensive for me here, so I drove to Colorado to have it done by a very experience doc (more than 14,000 of them performed) who did a great job. I have 20/20 vision in one eye, 20/30 in the other eye and I see great without glasses or any type of correction.
Even with the halo'ing the surgery was worth it for me, just because contacts are such a hassle and I was completely blind without them.
Hope this helps, please feel free to ask if you have any questions I could help with.