I am using yamaha fz-s from last 2 years. Its a very decent bike for city usage and also if you go on long rides.
Fuel economy- Around 35-40 km/l
If you don't care much about fuel cousmption then it can be a great choice for you.
The service you get from yamaha is pretty good. Its maintaince is not much expensive. A normal service will cost you around 600-700. I am very happy with the performance of fz-s. Its very realiable bike for youngsters and looks are also great. You Must go for it.