The TVS Ronin is a great option to consider if you want a relaxed machine for city usage. It is smooth, torquey, not very heavy, has good fuel economy and its exhaust note is bassy too, if that’s something that’s important to you.
Since you are a relaxed rider, you should strongly take a look at the Royal Enfield Bullet / Classic 350. With their charming, thumpy yet smooth engines, upright and commanding riding positions and great suspension comfort, these bikes would make for excellent companions. If you want something similar but lighter, then the Hunter 350 is worth considering.
For similar reasons, the Honda CB350 trio also deserve your attention, although they aren’t as characterful in terms of their riding experience as the RE 350s. A test ride of these bikes should help you decide which is best for you.