There are 2 alt coins. first ETH and second EOS.
I do believe on these 2 coins. I prefer assured and stable returns. And you can only get this in long period of time. I will definitely hold these coins for long term but will sell once i will get good returns .
ethereum and eos become one of the best coins at this time that can be used as an option, maybe besides the two coins it seems there is still neo that you can make as one of the coins that you believe 100% to be used as an option.