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. 

The Triumph Speed 400 is a largely reliable machine with few sporadic cases of big failures reported in the 2.5 years. It has been on sale, so by and large, you won't need to visit the service centre very often. Additionally, its long 16,000km / 1 year service interval means that unless you ride a lot, you only need to service it once a year - after the first service, at least. 

However, if something should go wrong, not having an authorised service centre nearby will be troublesome. You should speak to the dealership if a mechanic will be willing to visit your residence to service it. Otherwise, you have to transport it to the authorised workshop every time something like this occurs. 

Ideally, we would recommend buying a machine that has a dealership and service presence in your hometown and close to your residence or office. 

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. 

The Triumph Speed T4 will make for a better all-rounder because of its larger and more flexible 398cc engine. It is perfectly usable inside the city, and on the highway, you can cruise at early triple-digit speeds without breaking a sweat. 

If you want similar looks but more performance and better componentry, the Triumph Speed 400 makes a good case for itself. 

The Yamaha XSR155 is a much smaller - and lighter - bike that will have better handling and fuel economy, but will feel a little out of its element on the highway. 

You should also look at the Royal Enfield Bullet / Classic / Hunter 350 models (depending on your budget and design preferences). They are smooth, charming and comfortable machines that can be used both inside the city and on the highway. For similar reasons, the Honda CB350 trio also warrant serious consideration. 

A test ride of all of these, as well as anything else you're considering, will help you decide which one is the best fit for you.