I have always said something about this, and that is that any altcoin that is in the top5 is the best to be able to hold it because I know that it will do the best for bitcoin, in the entire Cyrpto ecosystem we know that Bitcoin is the boss, but because of that, since it is the only currency that has a life of its own, the others that are in the top 5 will follow it and of course I say that the best thing is also to buy some other privacy currency, for example having Monero is always good , because I know that in the future things with crypto will already be a fact, adoption and everything, but those who have Cyrpto will want to have privacy and that is something that we must guarantee.
For that reason I believe that Monero is the best option, therefore when we think about making or having a good diversification Cyrpto, for me the currency that provides the most anonymity, privacy will have much more chance of surviving than any other.