I would keep Cardano. Cardano is a good investment, it says to be the next generation cryptocurrency. Cardano is founded by the co-founder of Ethereum, Charles Hoskinson. Cardano is similar to Ethereum where DAPS and smart contracts can be built on the blockchain. Cardano focuses on, 1) first blockchain to be developed from a scientific philosophy. 2) Regulatory and Compliance focus. 3) Scaleability 4) Cross Chain integration. Moreover, Cardano aims to reduce fees that exchanges charge, allow quicker and easier transactions across the blockchain, remove risk of a third party losing your cryptocurrencies. For all this reason Cardano is a good investment.