I prefer Cardano because the price of this coin is very low, but when this coin is pumped, he can make a lot of profits. I personally benefit from investing in Cardano. EOS is also a good coin and now has a large community. But if you want to invest in EOS, it's also a good decision.
EOS is a good and potentially big coin, so if you choose EOS you will have a great chance to get big profits.
EOS and Cardano are good coins, so if you choose both, the coin will be just as good so if you have both, you will get more opportunities.