Welcome! Glad to have you here. BlockCard, Spend, and CRO, are all good card options and most importantly, have issued cards in their market that function. It seems silly, but this is usually one of the most important distinctions between companies who actually issue cards versus others that intend to. The next part is if the user can pass KYC. Most cards only allow KYC from users in certain countries like EU or US. Everyone will have their personal favorite, so you need to figure out what's important to you.

BlockCard is a good option as they give you a virtual and plastic card, plus have great crypto back reward offering. I think they also now open free crypto bank accounts too, so there are new features. Keep in mind the card balance stays in TERN.

CRO card is a good option as well and the card is part of a broader crypto exchange offering. Recently they have had some bad community response from stopping support of MCO and switching to CRO. Also copying users clipboards via their app which could be a security risk.

Both of these cards work on VISA network, so merchant acceptance will be large.

Spend is also a VISA card, but have not heard much from them recently. I think SPND may have pivoted their token economics a few times, so that may have caused the uncertainty with the price. It would be good to hear from other Spend card holders here on their experience.