India, Jan. 13 -- If you travel often, you know how important it is to have the right payment card by your side. Between airport lounges, foreign transactions, and currency conversions, the card you choose can make or break your travel experience. Two popular choices among frequent flyers are metal debit cards and prepaid travel cards. Both promise convenience and global usability, but they work quite differently once you start using them outside India.

The question is-when you're packing your passport and boarding pass, which one should you trust for your overseas travels? Let's walk through how each works, what they cost, and which one truly makes travel simpler.

Before comparing, it helps to know what sets these cards apart.

A metal...