I too am considering a 2 speed pump. I have a 36K gal pool with solar heating (one story) and in floor popups using 8 head valve and leafcatcher system. currently using original stealth Jandy 2hp with 520 sf pentair cartrige filter running off of Aqualink automation. If I do decide to go the 2 speed route, am I better off staying with the same brand as originally installed? I would want to retain current automation panel programming. and would running at the low speed be adequate pressure for the popup system so I could only use high speed for solar heating?