If I could upgrade my Autopilot Digital to a Total Control for only $1000, I'd do it in a heartbeat. 1) you get a system that turns itself on and off by actually measuring the ORP of the water rather than just running XX% of the time. 2) you get pH monitored continuously and acid added automatically to maintain the proper pH.

I've considered the upgrade myself, but I've been told it's closer to $2500 installed. I don't believe my Pool-Pilot Digital is compatible with the Total Control Controller, and I don't think an upgrade plan is in effect yet.