We had our pool put in this year and I had the pool company install it. It was expensive, but if they screwed up, they would have to fix it. They did have some problems and had to have an Autopilot rep flown up from Florida to get it working. Now that its in, it works great! Keeps Cl and Ph at steady levels with virtually no adjustment. One note, I did have some problems when my CYA was low. The TC system needs the CYA to be at the correct levels to work properly.
Bill