I think if you want to invest or trade altcoins in the long term you better buy the top 10 altcoins on coinmarketcap. Coins from ICO projects cannot be guaranteed to be held in the long term because they do not have strong fundamentals and have low liquidity in the market. But all the decisions are yours. Do your own detailed research before buying coins.
That's right, and if you feel that doing research takes a lot of time, then choosing the top 10 Altcoins on coinmarketcap is a good solution even though it's the last solution after researching others, because those with good fundamentals and liquidity will always be in a good position too