I'm going to add a heater/chiller to our Houston pool since it is July 1st and already getting uncomfortably warm. I'm looking at either an AquaCal HeatWave Superquiet Icebreaker SQ166R or a Jandy VersaTemp JRT3000R. I'm leaning towards the AquaCal heater/chiller but wanted to know if there were any strong recommendations one way or the other. I have a Jandy/iAqualink system, but the guy doing the work said they could tie either one into the controller or set it up as a standalone. The Jandy is slightly higher BTU at 130,000 vs 126,000 for the AquaCal and has a slightly higher COP of 5.8 vs. 5.6 but AquaCal seems to have a really good track record on their heat pumps. We'll use the heating some, but I'm installing it primarily for the chiller during the summer. Is it a mistake to get a combo heater/chiller vs. just a chiller or is the chiller performance on a combo unit just as good?