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
ETH is the best option and should be invested in this coin as btc keep rising even this coin will rise and help you make money in coming times. Also at present with fallen rates market is a best time to buy such coins at lower price .