If you are thinking of long-term investment id say Ethereum is a good option. It is a stable crypto currrency that is steadily rising ( maybe not right now though).Iif you buy some ethereum now, it should double your cash in a year.
I fully agree, the ether is a very good coin, this blockchain creates a lot of alternative coins, the price of $ 400 is the minimum for today, I expect it to be about $ 1000 by the winter. Litecoin advantage only in the speed of transactions. My choice of eth.