We're at the point of replacing our 10+yr old 3hp single speed whisperflo. I'm considering the dual speed 1.5hp full rated whisperflo WFDS-6. Would this be a good replacement? The pool came with the house we bought several years ago. Last year we replaced the liner and added the SWG. The pool specs are 25,760gal vinyl lined inground, Autopilot DIG-220 SWG, 36" TR-140 sand filter. It has an in floor cleaning system, but the jets are only acting as returns at this point. They cycle to the next zone each time the pool comes on. At some point my husband would like to replace the valve kit to restore full operation. I personally would rather just get a good robot! I spoke with Autopilot tech support and they do not think the variable speed is a good option with the SWG. What are some thoughts/recommendations from those with experience?