Since you are going to be learning on this motorcycle, getting something approachable and lightweight will be advisable. In that regard, both the TVS Apache RTR 200 4V and Bajaj Pulsar N250 are good options. 

Instead of getting them later, you can directly learn on these bikes and save some money, which will be lost when you sell your learner bike, because they are unintimidating machines, which will be good for a beginner rider. 

However, if you want something even more approachable, a simple 125cc commuter like a Honda Shine or TVS Raider would be an excellent place to start. 

If you want to stay within the Royal Enfield fold, you can look at the Hunter 350, which will feel much more manageable and comfortable than your older Bullet. But if you want to get a new version of your bike, the base Battalion Black and Military variants of the Bullet 350 will fit in your budget.

The latest Bullet is a refined, comfortable and reliable machine which should return decent fuel economy, when ridden sensibly. Do bear in mind that with the Hunter, you will get dual-channel ABS. But the Bullet's base models only come with single-channel ABS and a rear drum brake. 

Alternatively, other options from reputed brands worth considering are the TVS Ronin, Apache RTR 200 4V, Honda CB300F, and Bajaj Pulsar N250. These smaller bikes will offer similar performance to the RE 350s - if not more - while being more fuel efficient too. 

Take a test ride of these machines before you make a decision. 

Since you are a taller person, we would recommend you look at the Yamaha XSR155 instead of the MT-15 as the XSR is a more spacious machine which will be useful to you. For a similar price, you will also get larger machines like the Bajaj Pulsar N250, TVS Apache RTR 200 4V and Honda CB300F. It will offer you better performance at the expense of a small hit as far as fuel efficiency is concerned. 

Since you have mentioned that you are considering the Honda CB350 models. Do bear in mind that these are relaxed neo-retro roadsters which will offer you a more laidback riding experience and good comfort levels. Although fuel economy will be quite a bit lower than that of the smaller bikes we have mentioned above. It is also worth taking a look at the Royal Enfield Hunter 350 because it offers a similar experience to the CB350 but at a lower price and has comparable fuel economy and performance, too. 

A test ride of every bike you shortlist will help you make a decision. 

Since you have a long commute and you want a sporty-looking bike, the options you should be looking at are the TVS Apache RTR 200 4V, Bajaj Pulsar N250 and Honda CB300F. These are machines that will return respectable fuel economy, have enough performance and comfort to tackle your long daily commutes and also be reliable in the long run. 

However, since you have mentioned that your route has a lot of bad sections, we would strongly recommend you take a look at the Hero Xpulse 210. With its upright ergonomics, long-travel suspension and smooth, tractable engine, this will be the most accomplished bike to handle your daily runs. 

Take a test ride of these bikes to see which one suits you best.

Considering your requirements, the options we would recommend you take a look at are the Bajaj Pulsar N250, TVS Apache RTR 200 4V, TVS Ronin, Honda CB350 and Royal Enfield Hunter 350. Of these, the lighter 200s and 250s will feel more agile and have better fuel economy, while the heavier 350s won't feel as agile but will be a little more comfortable. 

Another option worth taking a look at is the Hero Xpulse 210, which will be the most comfortable of all the bikes listed here. However, it won't be as agile owing to its large 21-inch front wheel, soft long-travel suspension and long wheelbase. 

There are also some instances of engine issues being reported online, so it would be advisable to wait for some time before purchasing the Xpulse.

A test ride of these bikes should help you figure out which is the best option for you. 

The Bajaj Pulsar 220F you are considering is due for a generation change soon. We would recommend you don't buy this bike as it feels quite old and has been changed very little over the time it has been on sale.

Instead, we would recommend bikes like the Bajaj Pulsar N250, TVS Apache RTR 200 4V, Honda CB300F, TVS Ronin and Royal Enfield Hunter 350. All these have low seat heights, decent pillion comfort and are proven, reliable machines which will last you a long time. 

Take a test ride of these to see which one suits you best. 

Depending on what sort of bike you want, there are many different options to choose from. If you want a sporty commuter, then bikes like the TVS Apache RTR 160 / 200 4V, Bajaj Pulsar N160 / N250, Honda CB300F and the Suzuki Gixxer models will be good options to consider. 

If you want a neo-retro bike, then bikes like the Royal Enfield Hunter / Bullet 350, Yamaha XSR155 and TVS Ronin will be the ones we recommend. 

If you want an ADV, then the Hero Xpulse 200 / 210 will be bikes that deserve your attention. 

Take a test ride of everything you shortlist before making a decision.