I would say to go for the spinal anaesthetic if you can. I had SRS with Dr. Sanguan in 2003, and due to me crushing my spine in an accident and breaking it in the lower section, three years earlier, I couldn't have SA, and had to have a GA. My SRS was a two stage operation so I had to have two lots of GA within 2 weeks. My body did not take kindly to GA, and I was pretty ill from it. It took 6 months for the stuff to get completely out of my system, so if you can have spinal anaesthetic, you might have an easier time than I did.