I am using Voltas Split AC 1.5 Ton for the last 5 years.So long it does not give any trouble .
Only 2 - 3 times I have to call up the servicing man for regular services.Mostly service the AC required is to charge the compressor gas so that it may give good cooling effect .It has Lowest Temparature settings of 17C and highest settings of 30C.The coolness it gives is smoothing, Also the Electricity Bill is not so high.But just keep one thing in mind, buy the right tonnage capacity air conditioner(Voltas) as per your area requirement and every air conditioner(Voltas) will cool down your space.Voltas has improved with time to offer a good quality compressor. The compressor is a high torque compressor which is helpful for giving fast cooling for your spaceI must say that, they(Voltas) have improved the compressor quality and power efficiency as well with time.As a result the electric bill is low. It has Anti - Dust Filter and Cross Flow Vane for low Noise.
So I strongly recommend to buy the AC as it will be a good value for money.