I am afraid I have researched myself into a frenzy!! Trying to weigh out all the different mfg., compressors, sizes and efficiency ratings as well as contractors is making me nuts! I have finally decided on the contractor and narrowed the mfg. down to these 2. Any plus or minus info would be greatly appreciated!! A little house info, 1675 sqft. single level horribly insulated in Spring TX., O.A.T. is near or at the century mark and the inside of the house is 80 deg. UGH!! Thanks for this fantastic forum in advance!!