Confused. I have had estimates from various contractors and brands trying to make informed decisions. I was leaning towards a Lennox product. Liked the contractor and felt I was getting a good product. Got references, and all told everybody had a good experience. One HVAC professional I know felt that even though he didn't deal with Lennox, that they were good and that the dealers are taught and held to a high standard. That's great for the consumer (me), right?? Well my dad decided to call a few people he knew that have worked or are working in the HVAC field. They warned against Lennox because of the uniqueness of the systems. In other words, parts will be harder to get and if in the middle of a cold winter night the heat goes, PSE&G (local gas and electric company) will not be able to fix it because of it's unique parts. They suggested going for a brand like Rheem or Comfortmaker or something for which parts will be more universal. Thoughts??