Bitcoin will remain as always even if the price will go down, it is somehow considered to be traditional and believable crypto from the side of people and crypto community. Of course the next will be Ethereum. It's the 2nd largest cryptocurrency in terms of market capitalization and on top of the list for daily traded volume, and because of smart contracts Ethereum is so popular and valuable. Then, EOS and Monero will take their firm places. The fifth one is very personal, However, I choose ripple.