Go for gree, eyes closed, Tried and tested, We bought a Mitsubishi mr slim extreme a few years ago, but it failed to perform well so we changed it with Waves plasma series that performed okayish for two seasons. After that we bought another General split but that too proved to be a waste of money, so finally we changed all the units with Gree and they're all performing excellent since, I guess three summers. Another brand that we tried is Changhong ruba, Now the name here sounds like crap but the quality is great, two seasons gone and no complaints at all. But we've never bought a 1 ton A/c as our rooms are quite big all were 1 1/2 tonnes.