Suzuki Gixxer, GS150R or Honda Unicorn- which 150cc bike to buy : Need advice

Friends and fellow members, I am going to buy a new bike soon. I need mostly for office community daily. I run about 16 km daily to and fro... Please advice me which 150cc bike to buy. For me mileage is very important factor and I understand that 150cc bike are not good in mileage as compared to 100cc bikes. But I am looking for upgrade and willing to sacrifice mileage but still from 150cc segment bikes, I will choose one with best mileage and power combination. I am also looking for bike which is most reliable in long run.

I have shortlisted Suzuki Gixxer, Honda Unicorn and Suzuki GS150R.. please advice which one I should use from these and why ?