qqp question1: Which is better Hitachi 1.5 Ton 5 Star Summer TM RAT518HUD Window Air conditioner vs Hitachi 1.5 Ton 5 Star Kaze Plus RAW511KUD Window AC? question2: Which is better Hitachi 1.5 Ton 5 Star Summer TM RAT518HUD Window Air conditioner vs Hitachi 1.5 Ton 5 Star Kaze Plus RAW511KUD Window AC ?