Litecoin could be a great choice, but the best will be Ethereum in my opinion because of great news ahead and still undervalued at this price (~$260)
indeed, litecoin and ethereum is good choice for altcoins
but if we talk about coins wich mean all cryptocurrencies in coinmarketcap, i think bitcoin still be the best options for me
In the long term, bitcoin is always a very good choice when its value can always grow at a stable level and we don't need to worry too much about the risks it brings. However, with the question that OP is suggesting to us, we should answer all the coins in the market because the fluctuations and the value of the market will change constantly, and with each such change, every altcoin can always bring us a lot of profit, it is important that we analyze that through market figures.