As a homeowner who bought an Amana dual fuel furnace/heat pump system two years ago, I know that it's natural to focus initially on the hardware and the purchase price, but that's the wrong way to think. The great HVAC system that you want calls for more than just hardware. It includes an analysis of the heating and cooling loads needed for your specific house. It involves examining the required airflow and whether your present ductwork can deliver it without cold/hot spots and without leaking conditioned air (I found to my surprise that my old ducts leaked 50%!!). It also involves LOTS of details related to line sets, T-stats, CPH's, jumper settings, CFM balancing, refrigerant charges, ramping profiles, etc. to deliver the combination of comfort and economy most folks want. Screw up these details with a sloppy install and even the best hardware devised by man will work like a piece of junk.
I bought Amana (their good stuff, not the Distinctions line) because the performance stats were openly published on their website; their heat pumps had the highest HSPF ratings; their components were first-rate; and their warranty was unmatched. I bought my system from a top-rated local authorized dealer who helped fine tune the system after the initial installation. I believe that little glitches will always occur, so one has to be sure that the manufacturer and the installer will stand by the product and not charge extra for doing so. In my case, that is exactly what happened.
So, do your homework. Then choose a top-notch dealer who does not cut corners. This may cost you a bit more (or maybe not). But it will save you lots of time and money in the long run. Amana is an excellent choice. I think so because I could have easily gotten any system out there, but chose Amana (with a 10 year full labor warranty) to maximize performance and minimize repair costs. There are other good systems out there as well. I hope you find one that suits your needs.