Since you haven't mentioned whether or not you want a bike in the same category or want to move up, we'll give you a broad spread of options to choose from. 

In the 100cc commuter category, bikes like the Hero Splendor, HF Deluxe and Passion, Honda Shine 100 models and the Bajaj Platina 100 remain compelling propositions for their blend of frugality, comfort, dependability and low ownership costs. 

If you want to move up to a 125cc bike, then the TVS Raider, Hero Xtreme 125R and Honda CB125 Hornet would be our recommendations. Since you've said you want a sporty look. 

Take a test ride of these bikes before making a decision.