Ethereum is good altcoins, because if it is not why there's a lot of people buy and invest to it? Also, if there's a problems in this altcoins I was sure it was minimize and it can handleable.
Too many developments has done by ethereum itself. Remember the ico price was $0.002 and in this time it worth over $300 and i think if there will be more speculation about ethereum and it will drive the price to go up as fast as possible.