This may not be total fluff as some good might come out of it. When it comes to duct work for heating and A/C which setup is the best? If you have the vents come from the ceiling, have them come from the top of the wall near the ceiling, the bottom of the wall near the baseboard, or is it best to have them come up from the floor? Does it make a difference if the ducts do dual duty and deliver heat as well as air conditioning? If you had to choose a setup, which configuration would you choose and why would you choose that one?