Looking for someone who may have compared these two before. I have a 750 sq ft (31k gallon) in ground pool. I am looking to add a heat pump and I am looking at either the T135 or the SQ175. I don't need to ever cool the pool and a little extra noise is no big deal as I have many waterfalls and pumps running all the time. Beyond those two features is there any reason to pay the extra money for the SQ175? It looks like the BTUs and COP are pretty close so the performance should be about the same? Am I missing something?