This is really one of the best entry-level trackers. Also the staff are very kind as opposed to the often ban happy staff of other entry levels. A great tracker to be a member of whether you are just getting started or are long in the game.
The high-speed label means basically nothing in UNIT3D. All it means that one of the peers seeding the torrent is added as a “seedbox” on some users page. (/users/YOU/seedboxes).
Anyone can add any IP as a seedbox. On average these torrents may have better speeds but it means basically nothing in any concrete case. The “seedbox” peers are just too variable to rely on. The peer count is almost always going to give a more reliable indication of expected speed.
My main go-to resource is https://www.reddit.com/r/TrackersInfo/wiki/official_recruitments.
They are pretty hard to get into. Not much official recruitment and invites are relatively hard for users to get. IMHO they aren’t really worth it for how hard it is to get in. The tracker is also a bit weird and I don’t personally find it is for the best. However they are home of HONE and one of the few places where you can find 1080p WEB-DL with modern codecs. So I would be lying if I said I didn’t use my account there.