I have an old 10500 gallon pool. I live in Hawaii and the plaster is in bad shape so it take a lot of chlorine to keep it clear. My circupool rj60 swg is on its last legs - starting to leak and I can't reprogram it easily. What would be a good replacement. I saw the calimar titaninium at a great price but there seems to be some question about its reliability. So I'd like to hear from others on the pros and cons of their favorite systems. Thanks!