I have a 50K gal pool (including spa). The Hayward Super 2 pump motor has died. It is a single speed 2 THP. I know I can replace the motor for a low cost, but I am wondering if I should replace the whole pump to save on energy costs. I have heard some comments regarding in-floor cleaning systems not working with lower/variable speeds. If that is the case, perhaps my best option is to just keep a single speed motor. What about an EcoPump EP-8? Anyone with experience with these pumps? Perhaps it would be more compatible with the in-floor system. Any other thoughts?