I'm looking to buy a window A/C unit, approx. 10,000 BTU, for my mom who lives in San Antonio. Can someone reccommend a specific brand over the others or brands I should avoid? I don't know the difference between Fridgidare, GE, Kenmore, LG, etc... Is one brand better than the others? I want something that will work well and be longterm reliable. Opinions???? Thanks.