By personal experience, Panasonic 1.5 Ton 5 Star KC1816YA. It is priced around 30k, without bargaining, which is nice considering 1.5 ton and 5 star factor. Performance and efficiency (lower power consumption) is very nice and after sales support of Panasonic is good too. I have 3 of them and didn't face any problem with any of those.
Only one drawback is, this one is not very stylish or good looking.