The Honda NX500 is a smooth, proven, and reliable package as an ADV tourer, and is something you can't go wrong with. Its few drawbacks are its steep price tag and a shock that rebounds a little too quickly for comfort. Since it's a Honda bike, it's likely to last a long time without major issues and also be fairly easy on the wallet to maintain. 

Since we have not ridden the BMW F 450 GS, we can't comment on its strengths or weaknesses. We recommend you wait until the media as well as owners' reviews of this bike are out before making a purchase. 

In the 150-160cc commuter bike space, you have a good variety of options from different brands to choose from. Among the straightforward, simple commuter options, bikes like the Honda Unicorn / SP160 and Yamaha FZ models will be a good fit with their excellent fuel economy as well as comfortable ride and seating position. 

If you want something a little sportier, you could even consider the Bajaj Pulsar N160, which will also give you some features like a USD fork, which isn't found in most other bikes in the class. The TVS Apache RTR 160 4V is also a great option, but it can feel a little cramped, especially in the leg region. So we would recommend a test ride for all of these bikes before you decide. 

Since you have a longer commute, with its longer suspension and bigger wheels, a motorcycle will be more comfortable than a scooter, so we recommend going with a bike only. 

Both the bikes you are considering are some of the best machines in their class. So you're already starting from a very good point; therefore, here on out, it will depend on which bike fits you better as per your physique and has the features and look you prefer more.

The Honda CB125 Hornet has some unique features like the golden USD fork, a crisp TFT display and excellent fuel economy. However, it can feel a little tight for larger riders, so depending on your height, it may not be the best option for you. 

The Hero Xtreme 125R is the only bike in the class to offer you dual-channel ABS on select variants. Also, it is a little more affordable than the Honda bike, so if those things matter to you, then this makes for a better purchase. 

A test ride of both will help you decide which is better for you. 

The Honda CB350 models you are looking at are comfortable, reliable and decently fuel-efficient bikes which will last you a long time without any major troubles, by and large. Pick the one you like the look of the most or the one that's the most affordable, depending on your preference, because all three are largely mechanically very similar. 

The Triumph Speed 400 is also a great bike, but it has a much higher performance ceiling and will feel like a step up in terms of performance and handling. If that is the sort of experience you are after, it makes sense to go with the Triumph.

A test ride of both will help you figure out which is better for you. 

If you want an adventure bike that is E20 compliant, you will need to either purchase a new bike or search the pre-owned market for a lightly used model manufactured within the last 1 or 2 years. 

If you are looking for a new bike, we would recommend paying the high initial purchase price of the twin-cylinder Honda NX500. It is a rather sorted machine in almost every regard and will feel like a nice step up from your single-cylinder KTM. And since you're familiar with the trouble-free Honda big bike ownership experience, the NX500 makes for a logical step up. 

If you decide to go for something a little less pricey, then bikes like the latest KTM 390 Adventure models and the Royal Enfield Himalayan 450 are also options worth looking at. 

You also have the option of waiting for the new BMW F 450 GS, although its pricing will be similar to the Honda bike rather than the single-cylinder models mentioned above.

A test ride of everything you shortlist should help you make a decision. 

Since you are familiar with the TVS bike ownership experience, you could stick with the brand's products and go for the Jupiter 110 / 125, depending on your preference. Both are smooth, practical, fuel-efficient, reliable, feature-rich and lightweight products. Their 33-litre underseat storage area is a particular highlight, something no other rival can match. 

On the other hand, the Honda Activa, while a dated product in some areas, is also a hassle-free scooter. It's a product you really can't go wrong with. 

If you want to look elsewhere, the Suzuki Access 125 is also a fantastic all-rounder with a little more pep in its step than the two 110cc family scooters mentioned here. 

A test ride of all three will help you decide what is the best option for you.

Since most of your usage is inside the city, bikes like the Hero Xpulse 210, Royal Enfield Bullet / Classic / Hunter 350, Honda CB350 trio and the TVS Ronin will make for good options to consider depending on your preference. 

If you do want something a touch sportier but not very rambunctious, then the KTM 250 Duke also makes for a great companion. 

A test ride of everything you decide to shortlist will help you make a decision. 

There's no way to accurately portray how much the maintainance cost of the BMW F 450 GS will be, as it is yet to be launched. However, BMW bikes have a reputation for being a little pricey to live with, even the smaller 310s. You shouldn't expect the F 450 GS to be as easy on the wallet as its peers, like the Royal Enfield Himalayan 450, KTM 390 Adventure models or even the Honda NX500. 

We recommend you wait a while before you buy the F 450 GS so that you can see thorough reviews of the bike. Also, you can speak to actual owners of the machine, and then make an informed decision. 

The 150/160cc commuter segment is a great one to be shopping in for city duties because it is packed with excellent products that are comfortable, decently powerful and quite fuel efficient. Bikes like the Bajaj Pulsar N160, TVS Apache RR 160 4V, Honda Unicorn / SP160 and the Yamaha FZ models would be our top recommendations in this class. 

The 350cc segment - while much larger - is geared to provide a more laidback, leisurely riding experience, and this is why you might think that these bikes "lack pickup." You should ask yourself what sort of riding experience you resonate with first before you start shortlisting vehicles. 

Some bikes in between these two segments that also warrant consideration are the TVS Ronin, Bajaj Pulsar N250, Honda CB300F and the TVS Apache RTR 200 4V.

A test ride of everything you're considering will help you decide.