from the number of altcoins in marketcurrency which are in the top 100, there will be more potential and relatively good, it would be better for us to buy coins in the top 10 with undoubted potential but quite expensive. if you buy coins that are under the top 100 you may not trade in small amounts to avoid unstable market risks. in my opinion it's better to buy coins that are already popular like ETH, Ripple, EOS etc.