I have had the surgery. It is one of the most miserable I have ever experienced. The benefits were minimal, and two years later, the septum moved back to it's deviated state on it's own.
My least favorite part was when they pulled the splints that held the septum in place while healing. The Dr. said. "This is going to hurt a bit." Well, he was lying, it did not hurt, it was one of the most excruciating pains I have ever experienced. Those splints were at least an inch wide and an inch and a half tall at there biggest, and they pull the buggers out your nostril...
My advice, don't get it fixed.