I want to replace the swamp cooler in my shop. It's an old Champion Tradewinds unit that came with the house when we bought it. 2-speed, 230V, 7500cfm, 4-panel Aspen pads, downdraft setup that is on a pedestal that feeds into a wall in my shop. The shop is 1680sf and this thing worked great, but it's a pain to keep changing pads every 2-3 months. Tradewinds are no longer made, and I want to go to a cellulose style pad for less maintenance. Budget is $1500 or so for the unit. So far I've been looking at the Champion Mastercool, Phoenix Aerocool Trophy and Breezair units. Pricing on the first two is about what I am shooting for. I can't find pricing on the Breezair although the reviews sound awesome. Anyone out there with some experience with any of these? Is there a better brand in the price range? Suggestions welcomed.