if I choose a cardano. the reason is that Cardano even claims to have more advanced features than other protocols that have been developed, "the most appropriate crypto engineered". This platform combines several concepts at once namely a decentralized system, strict mechanism design and cryptography. Cardano is also the first crypto currency created based on Haskell Code, an industrial strength language that is claimed to be able to guarantee the security of funds to the maximum extent.
The Cardano Blockchain network uses unique Proof-of-Stake from an algorithm called Ouroboros. This is the basic completion layer which then continues to the main control layer after the validation is done. One of the most prominent advantages of Cardano is that it is designed to comply with the rules and logic that are made, while still maintaining the privacy of its users.
Another advantage is the Core System or Core Cardano System can be upgraded without having to separate the Chain network as in almost all crypto currencies created before Cardano. This of course will provide more value, and at the same time the stability of the ADA value will be more awake, because of the doubt about the perfection of the system Cardano can guarantee. The Treasury system also guarantees that the continuity of the blockchain network will continue to be maintained even though an Upgrade is being carried out.
but the choice is all of you, I only give advice. if you want to find it safe, invest cardano 300 waves 300. enjoy it