I'm in the Philadelphia area, having the HVAC upgraded in my existing home. Large house, 4 systems. Trying to decide on a contractor and evaluate their different brands. I like it very cool in the summer. Like it 68 degrees inside no matter how hot it is outside. So I need a lot of capacity. But, don't want systems to short-cycle and not remove enough humidity when it's mild out. Figured 2-stage A/Cs with VS blowers was the way to go. But then I see that Nordyne (Westinghouse, Frigidaire, Maytag, etc.) offers this new 23 SEER system with a modulating compressor ("iQ Drive System") - reminiscent of the old Trane XV15 from the late '80s. (Yes, I have done my homework.) In theory, I should be able to oversize the hell out of the systems so that even mid-afternoon if it's 100 degrees and sunny out, the house can maintain 68, but it should modulate down so that in the evening if it's 70 degrees outside and muggy, it runs steadily and doesn't short-cycle, and removes enough humidity. Am I correct in this assumption? Anyone have any experience with these units? I've been considering Rheem/Ruud 2-stage, ICP (Comfortmaker/Arcoaire/Heil/Tempstar) 2-stage, etc. but this Nordyne stuff seems like far superior technology. Anything I need to watch out for?