If you get on some of the HVAC contractor sites, the brand mentioned most often as "the killer app" is Trane. Its also been discussed that a good installer can make a lousy piece of equipment work better than the best piece of equipment in the hands of an amateur.

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84 300DT Puke Yellow. Totalled after 438,000
84 300DT Orient Red. 169,000 (actual mileage may vary)
2002 Explorer EB (wife's)