Of the three bikes you have shortlisted, we would suggest you choose between the Triumph Speed T4 and the Royal Enfield Scram 440. These two will be more comfortable, although the Royal Enfield Guerrilla will give you more performance on the highway. 

Since you've already owned a Royal Enfield Classic, the latest Royal Enfield Bullet / Classic is also worth taking a good look at because they will offer you good comfort and ride quality - both of which are important to you. 

You can alternatively also look at the Honda CB350 models because they are comfortable, smooth, well-built and torquey. 

A test ride of your shortlisted bikes will help you decide which is the best option for you. 

Bikes you should take a look at are the Royal Enfield Hunter / Classic / Bullet / Meteor 350, Scram 440, TVS Ronin and Honda CB350 trio. All have smooth, torque-rich engines, comfortable seats for two passengers and great suspension comfort. 

These factors will help you on both broken city roads and open highways. We would recommend you take a test ride of all machines with your wife so as to ascertain which one is best for you. 

Among the bikes you have shortlisted, we'd recommend choosing between the RE Guerrilla 450 or the Honda CB350RS. The Guerrilla is better suited for highway rides, thanks to its more powerful engine. On the other hand, the CB350RS makes a great city bike with its light clutch and smooth, torquey motor.

In a similar price range, the RE Scram 440 is also worth considering. It can comfortably cruise at 100-110 km/h on highways and offers good suspension comfort for broken city roads.

If you’re open to stretching your budget a little, the RE Himalayan 450 is another strong contender. It’s a wonderful highway tourer and still quite manageable for city use.