The big names are all pretty reliable: Carrier, Bryant, Lennox, Trane, American Standard, York, Coleman, Rheem,
Many manufacturers have “second tier” brands that are cheaper, but certainly not junk. Coleman, Payne, Heil, Arcoaire, Tempstar, Ducane, Westinghouse, Ameristar, Luxaire, Moncrief and others are good brands, and there are others.
This is a function of SEER ratings. 13 SEER is the minimum rating. You can go up to 20ish, depending on the configuration. The high SEER ratings can get quite expensive.
IME, stay away from Heier, a Chinese brand with, IME, poor quality construction and performance. Goodman has a well deserved poor reputation, although they have made efforts in recent years to improve. IMO, the jury is still out on that.
13-15 SEER, depending on your budget.
A VisionPro 8000 tstat that allows to configure HP cut out in cold climates.
“Snow Legs” on HP. A plastic preformed pad, or poured concrete, but not a preformed concrete pad.
Not a builders model. (Unless budget is tight, or you’re planning to move in 1-4 years)
New lineset.
R410a Refrigerant