For me ethereum is the best altcoin and it is the second best investment coin after bitcoin. Ethereum is good for long term holding and good for trading too, if you can't do trade, at least you can make good profit by just holding it. Year after year ethereum shows its performance that it can compete with other altcoin, and the price is always up.
Indeed, in my opinion ethereum is good coin to hold. Its good platform and used by most token in market. Ethereum is biggest market cap in market after bitcoin and i think ethereum price will reach $2500 end this years like some expert predicted