I had a local, was advised to take strong pain killers two hours before, I am sure that this helped a lot. It was bearable. I was last in, saw all the women walking out of the room, none looked distressed at all. It was uncomfortable at worst. If I had to make a decision now having had the experience, I would go for a local over general, definitely. Compared to childbirth, this is very doable.
Hope this helps, ask a pharmacist for the best kind of pain relief and make sure its a good two hours before so that it has time to kick in.