in general, both these crypto-currencies are promising and suitable for long-term investment. Litecoin acts as an analog of bitcoin, only with faster and cheaper transactions, Ethereum is a platform for creating decentralized applications and a reliable investment tool. proceeding from the rating by the volume of capitalization, it is necessary to choose the Ethereum, since it is supported by thousands of users, who are convinced of the benefits of the Ethereum and the democratic base of developers. proceeding from the fact that it is better to diversify a crypto portfolio with several coins, it is possible to keep both these coins on a long-term basis.