I have been holding both Monaco and TenX so far. I have researched Centra but it does not appeal to me. So far I am good with just Monaco and TenX, but I think the whole crypto market is big enough for six crypto cards. Only time will tell if all will survive. Crypto debit cards are something that will not exist for a very long period, because why use a card if you can have a crypto wallet on your phone. It will help a lot of countries transition from paper money to crypto.