I am replacing a 15 year old air handler. I have a 2 ton Trane outdoor unit and will be replacing a Trane air handler. I have received estimates for both Trane and Goodman variable speed air handlers. Can anyone advise as to whether these two are comparable as far as reliability, maintenance, repair, etc. Of the the 4 estimates I've gotten the contractor that I am most comfortable with is recommending the Goodman.