Looking to replace the pumps and add Easytouch for my pool (25,000 gallon) and attached spa. I'm thinking the Intelliflo VS 3hp pump for the pool, but not sure which pump would be best for the spa (thinking a single speed would be adequate to run the jets). Also wondering what the difference is between the Intelliflo VS, the xf version, or the vst. Does anyone have any advice for me on which way to go?