I bought a Vertis 1 Ton AC after going through a lot of reviews and opinions, also I was already using a Voltas AC from past 5 years and it had not given me any trouble.
The product as such is very good but the dealers handling it at Jamshedpur are not..
Its a silent machine and very effective for my room dimensions which is 11*12 feet. Also mine being a ground floor residence, the cooling is very fast. Also the dimensions of the mahine is also small compared to other brands ( This I have not checked physically but from the specification I got for the different brands from their catalogues)
Though the dealer had insisted me to go for a 1.5 ton, I calculated and found that 1 ton is more than enough.
So before you go for the tonne make a calculation yourself and then discuss with the dealer.