It is definitely the most promising altcoin of 2018. I put it on the first spot in my priorities list. Finding a new ICO, which can turn out a big profit, is very hard and risky, whereas Ethereum is more stable and can make you as much profit.
Chances increasing ETH price is very huge but with the potential it has will surely increase its price. Now many people are panic about the present situation of the market, investing in potential ICO's is always good but a good one is always very difficult. Holding ETH will also give us a good profit.