I think it's ideal to go for exchange coin because there seems to be a lots of them doing pretty good, holding Binance and Kucoin for a long term is not a bad idea, I think going for a reputable exchange coin is the best for now
The last few weeks have been actively campaigning for investments in binance, but after information about the hacker attack, their coins have fallen very much in price. I think that you need to first think about the security of binance, and then think about the investments of BNB.