Ok, now I see that some have heating mode and others don't although it really doesn't show much difference in price when I compare. However, I'm really more interested in the best AC for the money so should I go with just the AC only units? Supplemental heat would be a real plus but AC efficiency and RELIABILITY are what I'm after.
Also, maybe (2) single zone units rather than a dual zone? If one goes down, I still have AC and the pricing seems to actually favor (2) single zone units.