TVS Apache RTR 160 4V

All the options you've shortlisted are great at being decently reliable point A to point B runabouts. 

Going for a 125cc or 150/160cc option like the Hero Glamour, Bajaj Pulsar N160, or the TVS Apache RTR 160 4V will give you considerably more fuel efficiency than a bigger machine like the TVS Ronin, but at the cost of performance. 

We'd recommend taking a test ride of all the options you're looking at and then deciding.  

Since you're shopping in the 150/160cc segment and want flashy looks, good features and decent mileage too, here are all the options you should consider. The TVS Apache RTR 160 4V is a smooth, comfortable yet decently sporty machine. Also, since you mentioned that you want a more manageable machine, we'll stick with options that have a low seat and are lightweight. In a similar vein, you can also consider the Bajaj Pulsar N160 and Honda SP160, too. 

If you can extend your budget, bikes like the KTM 160 Duke and Yamaha MT-15 will also fit the bill because they have punchy performance, yet return good fuel efficiency and are lightweight and manageable too. 

If you're not going to go on longer journeys often and want to stay in the same displacement range as your Unicorn, the Bajaj Pulsar N160 and TVS Apache RTR 160 4V will serve you well. If you want a small step up in terms of performance without sacrificing too much fuel economy, the Bajaj Pulsar N250, Honda Hornet 2.0 and Suzuki Gixxer 250 will fit the bill. You can also take a look at the KTM 160 Duke and Yamaha MT-15 because, while they have smaller displacement engines, they are liquid-cooled and offer punchy performance with great fuel economy. 

The more laidback Royal Enfield Meteor 350 and Honda CB350RS will definitely feel more special in their riding experience and fit & finish. Also, it will be significantly more expensive to buy and maintain compared to the aforementioned bikes. 

Since you haven't specified your budget, we'll recommend something that feels like a step up without hurting your wallet too much. You can take a look at the Bajaj Pulsar N160, Suzuki Gixxer 150 and TVS Apache RTR 160 4V - all three are comfortable and fuel-efficient machines which will feel like an upgrade over your Radeon. Do take a test ride and see which one fits you best, because your daily running is quite high. The Apache is a little cramped in the way it folds your legs, so you may want to take a look at the other two. 

Something comfortable in the 160cc space, like the Bajaj Pulsar N160, TVS Apache RTR 160 4V or Suzuki Gixxer will fit the bill for your requirements, although you may need to extend your budget a little bit for some of the higher variants. You can also look at some 125cc bikes like the Hero Glamour, Honda Shine and TVS Raider if you don't want to stretch your budget, but with two people on board, the 125s will feel a little breathless at highway speeds. 

A good upgrade without sacrificing mileage from your 100cc Platina would be something in the 150-160cc space, like the Bajaj Pulsar N160, TVS Apache RTR 160 4V, Suzuki Gixxer, Honda Unicorn/SP160, or the Yamaha FZ lineup. If you want to go beyond that, the TVS Apache RTR 200 4V, Honda Hornet 2.0 or Bajaj Pulsar NS200 will fit the bill. Take a long test ride to see which option suits you best. 

Since you have mentioned you want a bike that looks sporty but is comfortable to ride, something in the 150-160cc sporty commuter space like the Bajaj Pulsar N160, TVS Apache RTR 160 4V, Honda SP160, or Hero Xtreme 160R 4V will serve you well. If you want something that is packed with more performance but is still usable and comfortable inside the city, the KTM 160 Duke and Yamaha MT-15 are options you should consider. 

We would also recommend the Royal Enfield Hunter 350 because it is a comfortable, approachable and reliable machine, although it doesn't have the sporty look you want.