the best coins that are good to buy even the market price are unpredictable are bitcoin and etheruem. these two coins has a possibility growth faster than that other cryptos that are listed on the market.
Yes, they grow faster but in value they are higher, so holding them is risky, big fluctuations so losses or losses will be very fast. In my opinion, they should hold new altcoins, they have very high potential, mainly we patiently hold them for a long time will give us high income.