I have been using Trane 1.5 ton for last 3 and half months and all I can say is I am impressed.
I have taken 3 star ac and its really taking care of electricity bill. The ac remote is very unique. It guides me in setting the ideal room temperature which effectively lowers my electricity consumption.
I would say that Trane ACs are unique, cost effective and gives pleasant cooling. The only drawback I see is that once the ac is turned off, one needs to wait for few more seconds until it gets completely shut down.