I've read through many of the posts on this site regarding differences between many manufactures. Most have been for air handling units. I'm looking to buy a 3.5 and 4 ton unit for a 3,000 sqft new construction in new england. Getting prices on both Rheem and Trane 14 seer condensing units. These will be paired with Unico air handlers. I know the SEER ratings will be only around 10 but I am going with the higher SEER in order to get an energy star rating, and thus a rebate. My question is mostly of quality. Will the expected life of these units be less because of the Unico?