Well, we had the second guy show up tonight. He was MUCH nicer. He's a Carrier dealer and suggested we go with the 38HDC unit. It's much smaller, and much quieter than most typical units. Which in our case would be two tremendous pluses, as the condenser needs to sit on the balcony outside our smaller bedroom/game room. The downside to this unit is that it only has a SEER rating of 12, which does not qualify for the Energy Star rebates in LA. It's also not available for use with Puron. Hmmm...