I'm in the market for my first trailer and after visiting two dealers (one Bushwacker & other the TAB) I clearly noticed the quality difference of TAB and now I'm drooling at the thought of owing the one. Here is my dilemma. My local dealer in Madison, WI has some nice used trailers and the new ones with the central AC. This option seems like a big difference to me but I have no basis other than logic. So please help answer the question...? Is the central AC under the mattress and not above worth the extra cost?? Thank you!