From my experience in bitcoin, nobody knows the coin that is going to do well, that's why some people missed opportunity of investing in a coin that late become promising in future, I could remember when ethereum came out new, many people was afraid to purchase ethereum as of that time, including bitcoin who is the mother of all coins, when it was introduced nobody knew that it will get up to this level

So what I will advice anyone who have the interest to buy coin, the person should use he or her spare money to purchase such kinds of coin, and should hold for short term, because their's every tendency that the coin can die off at any time, so that you will not regret after all.