As a frequent business traveller, I often mull over which card should I be using for my overseas spends. I have heard of many people advocating the use of cards like Revolut or YouTrip, but am hesitant to use them as they function more like a multi-currency mobile wallet rather than "a credit card". This means several things. You will have to top up your account before you can use the cards, and also there are less of those bells and whistles like cash back or miles collection that you could usually do with a credit card. I personally find it rather irritating to have the need to top up my account before I could use them. What if the account has less money than the meal or item I am paying for? I will then be put in an embarrassing situation where I have to apologise and "secretly" top up my...