I have a RX-100

I have a RX-100, and never thought of selling it neither will I. Now, I am looking for a bike with better mileage, but never was satisfied with the Pulsar and Fazer or etc what my friends possess. I always have a like for CBZ coz of its style and power. I think this is going to be my bike. I am not clear about the MILEAGE. anybody out there would could gimme a better picture about mileage?
MILEAGE PLS…..?