I m having Yamaha RD350 for my passion Now I need to buy a

I'm having Yamaha RD350 for my passion. Now I need to buy a mileage orieted bike. My choice is TVS STARcity and PLATINA.
1. Which is more reliable and having good stability with good wheel base.

2. Which holds little bit power compared to other.

3. Which REAR shock-obsorber is good for our Spinal.

4. Which has long travel length in front fork shock absorb.

5. Which is more STYLISH and having GOOD FEATHERS.

Thanks for your interest.