I had the Allegretto done and it worked out great for me. Very little pain, 20/20 and 20/25 the next day, 20/20 in each eye after 1 week, and 20/15 each after a month. As they explained it, the allegretto tries to work with the shape and contours of your individual eyeball. My doctor also said that a good friend of his in California had been using it for a couple months and was getting the best results he'd ever seen. Also, I'm fairly sure that there wasn't a difference in price between customvue and Allegretto.