A superior proxy is defined by its refresh rate. Many clones are just static snapshots of an old database, meaning you won't find any movies or software released in the last few months. The best mirrors actively scrape DHT networks to provide live, working magnets for the latest content. If a proxy hasn't updated its "Latest Torrents" section in 24 hours, it isn't worth your time.
(like Opera's built-in VPN or extensions like Browsec) provides better anonymity than a standard mirror site. Stick to Verified Torrents: extatorrentcc proxy better