We wanted the in floor system but couldn't find a gunite pool builder who had experience with them in Oklahoma City. The one we did find only installs vinyl pools and he has installed a lot without complaints. The systems we did look at had life-time warranties on the heads and I was told the companies are very good with customer support because they want the systems to catch on. While in floor systems are still new in the U.S., they have been popular in Australia for a long time. There is one builder in our area that is starting to install the system and has a demo pool to show how they work. After watching it for a while, I think they would be worth the cost.