I prefer ETH and XLM, both of which have products that are adopted quite broadly so that the potential to bounce when there are favorable conditions will be greater.
not a bad idea if you want to play with market trends let alone use the top altcoin in markets like ETH & XLM, in my opinion it is a good choice, but don't forget to add like LTC or BNB, because these two altcoins are also very profitable for long-term investments . they are also giant altcoins and have many users.