I had PRK done in 2001 while in the Navy, and it lasted about five years before my vision started to go again and I needed glasses. The docs said to expect this due to the natural aging of the eyes. The plus side is that my current prescription is nowhere near as strong as it was prior to the surgery.
What was the procedure like? Did you look into the light? Did you have to hold your eye still and look at one thing the entire time?
I can't speak to the Lasik, but as for the PRK, you lay down in the chair, they put some pain meds in your eye, and then a speculum to hold it open. Doesn't really hurt at all. Then, the doc programs the machine for your correction and puts it over your eye. There's a dot upon which to focus, and then the laser fires. Takes literally no longer than 10 seconds, and then you're getting up out of the chair, noticing improved vision right away. With PRK, it's not perfect instantly, but gradually improves over several months as the eye heals. Mine took about six months for the fuzziness to clear up and the corrected vision to settle in.
Post-op it was pretty painful for about four days, but I had some good pain meds. Also I was somewhat photo-phobic (light sensitive), especially around fluorescent and mercury lighting for a while, so I'd wear sunglasses.
Overall, though, it was worth it, especially since it was free!