To me the best coins as at now still remains binance coin. I am happy it has been growing everyday day since the beginning of this year and I will keep holding it until it went above $100. Ethereum is also doing well now and litecoin is gaining some ground. I think most of the popular coins are seriously doing well now.
bitcoin of course.
if you buy bitcoin, choose tezos. after cases it will pump like bitcoin. at least 10x