I have a 21,000 gal pool in Texas with all Jandy equipment and need to replace the broken AutoClear Plus SWG. I am contemplating on purchasing the Jandy Aquapure Ei or 1400 model SWG so that I can hook either of them to my existing Aqualink RS system and control from inside the house. I have not seen much feedback in regards to the Aquapure Ei model. What is your advice? The cost difference is about $150 between the two with the 1400 model being higher. Thanks in advance.