My best option at the moment is PCL, which is not too high a coin value, is based on the idea of technology by a great team. At present, PCL value is increasing while many coin is tending to decrease sharply. Very likely, in 2018, PCL will increase very strongly, creating a large profit for investors.
I believe that some popular cryptocurrencies have more chances to go up. I guess that Cardano, NEO, DASH, and Ontology will grow much. Besides these altcoins, there are some new cheap good alts like Gladius and EIDOO.
only eth and btc can grow aftermore.
all altcoins lose their value slowly. and they all will go to 0+ in long term.
dont take risk and dont take alts.