The coolers on the chart are mostly single inlet coolers. Mastercool and Aerocool are the best if you insist on sticking with evaporative cooling. The "Other" column is a combination of mini-ductless split systems, window units and side-wall units. It's interesting data, twenty years ago it was probably 50-50 coolers/conversions! We believe folks are getting smarter, by that we mean instead of throwing away $1500.00 to install the same type of cooling they already have, they are making their home's value go up. When you convert to refrigerated air you get a return on investment worth more then the conversion installation cost! Many people love to have their windows open in the summer so they keep evaporative cooling because it allows doors and windows to remain open. The maintenance issues associated with swamp coolers are obvious to anyone that owns one. Being able to just push a button and have heating or cooling is nice! So comfort, no maintenance and the value of your home increasing is really very compelling arguments for refrigerated air.