^^ I really wonder how you arrived at the conclusion TVS is better than Bajaj in quality, sounds really funny. Provided that you do all that you mentioned any bike will last for a life time.

TS.. you could take a look at GS150R, you will get good power/decent looks/mileage will also meet your requirements. I'm not sure how good is Suzuki service/spares availability in your area. Would have gone on and suggested Disco 150/P135LS, but looking at your list it does appear that you don't like Indian brands that much.

As per your selection, SS125 is a great bike, but I don't think it meets your requirement in mileage. (saying this on hearsay.. generally, I haven't seen SS125 owners giving 50+ numbers on mileage). Other than that it's a great bike.