Finding myself in the aircon market. Any suggestions for the following? I believe I am looking for inverter type, split unit. Any reason to look at something else? Where to look? Seems like Polaris is the place to go? I recognize some available brands but just because it sounds familiar doesn't mean it is good. Any brands to stick with or stay away from? What features should I look for besides inverter? How do I determine the size I need? and just in case, did I miss anything?