I would say LRC, LMC and XAS all three are chinese coins which have potential to grow massively in 2018.
Different can be of different choices here, but my choice is to choose Etherium, I think Etherium price is still very low, and it has more chances that its price will increasing more and more and it can even boost in 2018. Therefore i think the best choice here can be to choose Etherium as compare to any other atlcoin.
yes according to my choice in all presents altcoin ethureum is the best altcoin in all of the them because the interst of people is increasing in etherum with time and the price of etherum is also very cheap now a days and due to increased interesrt of people the rate of etherum is also increasing and in future the price of etherum will be very high so you can get enough profit from etherum.