No one can guarantee you which altcoin will perform better in the future, since we don't have crystal balls.
AFAIK looks like you're interested in privacy coins, why not you try to invest in Monero or Zcash? And for some reason I prefer Monero than Zcash.
Don't trust me, please do yo own research first before invest in any altcoin. Pump and dump is very normal in altcoin space, it's higher risk than Bitcoin.

Beware and stay away from any paid shillers promoting scam/fake project to you.