I suggest bitcoin.This time the price of bitcoin is getting very low so this is the much better time to invest in bitcoin and bitcoin can give the good return in future.

According to me Altcoin coin will be a too high in 2018 this time Altcoin value is very demandable and in 2018 it will be a very valuable.

I think this is the very good chance to invest in the ETH because this price are getting increasing day by day.