I have an older house (1921 -- approx 1600 sq. ft. of living space) in which I'm having central heat/air installed. I have a good quote from a contractor who had installed a system in my neighbor's house w/o incident. He initially offers to install Goodman condensers/furnaces, etc. I am leaning toward that b/c I am probably selling the house within 3 years or so. However, I'm open to being convinced that there is a significant difference in the functioning and reliability of the goodman versus higher-end models.