I think the best coin to HODL is still bitcoin ,65% of my money are in bitcoin and the rest on altcoins like ETH and LTC ,gone are the days when you will see 2000% of altcoins ,bullrun has been around for months now and altcoins aren't favouring that much,they will be profitable but not just like 2017 pump
But it really is not a coin that can bring you high profits. I think at a great bull run like this, you should invest in altcoins in the top 20, it is still quite safe but the profit will be between 50 and 80%.
EOS and BNB will soon bring such high profits in Q4.