More people ask about what altcoin is good. One should make research before investing. Most people here are busy listening to the words of people and don't have their own ideas about what altcoins to buy. So in my opinion, look for information about the coins that you will buy and make an analysis based on cycles that have happened.
The smart thing to do when in terms of invesment in altcoin is hodling it in a long term investment and have patience all the time in order not to greedy sell or trade coins. Look for a signals when is the right time for that in order to avoid risky losses.