For city use, we'd recommend picking between the Royal Enfield Classic 350 and Honda CB350RS. Both seat the rider comfortably, although the CB350RS has a slightly sportier seating position. But also have a comfortable suspension, which is what you'll value in the city. If ridden sensibly, the two 350s will also return decent fuel economy. Do bear in mind that the Classic 350 is likely to be updated with a slip/assist clutch soon. if you are looking to buy this bike, we'd advise you to defer your purchase by a few months.

Since you're already looking at the Classic, its sibling, the Hunter 350, also makes for a great city bike. Despite its relatively smaller size, larger riders will fit just fine on the Hunter, and this is the most city-friendly machine of all the bikes you are looking at. 

The Harley-Davidson X440 is also a good option inside the city with its torquey engine, neutral ergonomics and decent suspension. But its fuel economy will be lower than the other bikes, and its top model falls outside your budget.

Take a test ride of these bikes to decide which is the best option for you. 

The Harley-Davidson X440 will be a good starting point for a novice rider, although you will take some time to get used to its weight. Since you are shopping in this class of bike, other options to consider are Royal Enfield Hunter 350, Honda CB350 trio and the TVS Ronin. Of these, the Ronin will be the lightest and one of the most affordable options while still delivering comparable performance to the 350s. 

The Yamaha Aerox 155 is a good scooter in many ways, but its stiff rear suspension and cramped ergonomics for taller riders are two big reasons we would steer you away from it. If you do want a large-capacity scooter, then the TVS Ntorq 150 is our current pick because it has engaging performance but doesn't sacrifice comfort or practicality. 

Take a test ride of everything you consider, which will help you decide if you're ready to get into bikes or should stick with a scooter. 

Both the Royal Enfield Classic 350 and Harley Davidson X440 are great bikes to use daily, however they have a different riding experience. The more powerful Harley is also slightly more eager in the corners and has a more engaging riding position, too. It will also be less fuel-efficient in city traffic owing to its larger engine. 

The relaxed Royal Enfield has a more laid-back riding position and will also feel like a slightly bigger bike. If you travel often with a pillion, the Classic is the better bet as both of you will be more comfortable. 

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

The Harley-Davidson X440 is built by Hero and is a simple motorcycle without too many complex parts or features. As such, it should largely be a decently affordable machine to live with by and large. Resale value is very subjective and is sensitive to the area you reside in, as well as a multitude of other factors. 

If you want something similar, bikes like the Honda CB350 models, Royal Enfield Meteor 350 and Triumph Speed 400 make for promising alternatives.

Take a test ride before you decide to see which one fits you best. 

Both the Harley Davidson X440 and the Royal Enfield Meteor 350 are similar in some ways, in that both use simple, air-cooled engines and aren't overly sporty. However, the bigger Harley has a clear performance advantage, which will be useful when you need to make an overtake at highway speeds.

Its 6-speed gearbox will also ensure that the engine stays smooth and relaxed at 100-110kph. It is something the smaller Royal Enfield bike won't be able to sustain so comfortably. 

If you are the sort of rider who rarely ventures over 80-90kph, then the more affordable Meteor 350 would be a good fit. 

Among the RE 350s, you can consider the Hunter / Bullet / Classic models for their comfortable ride, neutral ergonomics and smooth as well as characterful engine. In a similar vein, the Honda CB350s also warrant strong consideration for similar reasons. 

All the Harley-Davidson X440 models have a similar riding experience and only differ in terms of features and design, so pick the one you like the most. 

Lastly, we would also recommend you take a look at the Triumph Speed T4 and Triumph Speed 400 as they offer great performance and quality at a reasonable price. 

Take a test ride of all the bikes you shortlist before you decide.