I will go with NAGA project.
My cryptocurrency in 2018 is we will always be Bitcoin and ethereum and i will also add litecoin, because this three cryptocurrency has a big chance to grow or to pump very high, so i will always hold my bitcoin, ethereum and litecoin, so when the 2018 will come and the value or the price of it is we will be x2 or x3 on it's value right now i could totally be rich in the year of 2018 by holding this 3 cryptocurrency.