My favorite Altcoin is Monero. Monero has excellent technology and professional team. It can not be hacked. All transactions with Monero are completely anonymous, no one can find the Monero user. I believe that in the next few years, the government will regulate crypto, so that a lot of people will use Monero and Monero will become more popular and valuable. My favorite altcoin is the ripple. Although the ripple is as limited as it is managed by the company, for me Ripple still has good potential