qbittorrent
qbittorrent
I've been using it for a while now. There are no ads, and it doesn't include any unnecessary features like BitTorrent or UTorrent. I'm really satisfied with it.
It's great actually. Looks a lot like uTorrent and BitTorrent without the ads and mining crap on it. You could say that qbittorrent today is what uTorrent was several years ago.
I also use qBittorrent—it works well and is straightforward.
qBittorrent is based on an earlier iteration of uTorrent (prior to ads and mining features). It performs well and is straightforward to operate.
Using the older version of utorrent without ads is recommended. v2.2.1 seems to work well. For a seedbox, libtorrent is definitely the top choice.