Since you are looking at ADV-style bikes, we recommend you consider the TVS Apache RTX 300, as it will be available within your budget. The RTX is a comfortable, feature-loaded, and powerful motorcycle that is priced close to smaller, less feature-rich bikes and therefore warrants serious consideration.
If you want to stick with a Japanese brand instead, between the Honda NX200 and Suzuki V-Strom SX you’ve shortlisted, the Suzuki makes for the better all-rounder. Take a test ride of these three to see which one suits you best.