I think a good altcoint to hold for a long time is Ethereum, this coint is altcoint the best among the other altcoints, and I'm sure ethereum will be able to survive for a long time because of the advantages it has
He is not asking about bitcoin. No doubt bitcoin is the top currency and holding is profitable, but here the question is about Altcoin, and I think that there are two coins which are my favorite for long term investment, Ethereum and ripple. These coins hold top position in the market and are fast growing especially ripple. A little bit increase in the price will give you big profit.