I will recommend you to go for Hero Splendor Pro. I know that there are further Hero models which comes with better efficiency but if you will see that their engines are of same specifications as of Splendor Pro but with higher efficiency rates. This modification is due to restrictions on the performance of this bikes.
Hero Splendor was launched in 90's and was loved by everyone in India. According to statistics every 3rd person who chooses bike for daily usage then they opt for Hero Splendor. Splendor Pro is a refined over previous modes. It comes with 97.2 CC of engine with Fuel capacity of 11 litres. It normally gives fuel range of about 600 KM (based on your Riding Style). Best part about splendor is its body, it is a slim motorcycle which is very easy to handle even in traffic. You can easily do filtering.
So, If you are opting for a new bike with very good mileage then nowadays you should only go for Splendor Pro.
I am currently pursuing High School and planning to pursue career in Computer. Currently, I work on one of my blog - JTech Articles.