Bittorrent is a tool; an inanimate pile of code. Bittorrent does not "do" anything; any actions (for better or worse) are chosen by the user. In short, I am not responsible for what you do with any knowledge obtained from this post.

IMHO, the best bittorrent client today is qBittorrent. It is full-featured (probably has more features then most realize) and well supported by the community.

A few of the features (as I recall):
- it offers remote service (run the program on the Chromebook home media server in the back room & control qBittorrent from any other machine on your home network)
- self-updating trackers (a bittorrent tracker is the traffic cop guiding the way to the different clouds offering the various media). Current (up to date) trackers make torrenting go much faster than older (out of date) trackers)
- built-in search engine (this is disabled by default, but a little searching of the community support documents will show you how to set up qBittorrent so you never have to visit an actual torrent site to find content)
- Automatic downloading via RSS (really simple syndication). This feature is also disabled from initial setup, but the aforementioned community docs will show you how to set qBittorrent up to automatically download regularly scheduled media.
- ability to hand off downloaded content to third party programs / scripts

https://www.qbittorrent.org/ | https://github.com/qbittorrent/qBittorrent/

Honorable mention:
rtorrent is a command line BitTorrent client that has existed for more than a decade and is also well supported by the community. As it's command line proggy, it can be used anywhere one has remote access + permission to run torrent clients.

Also, as it's a command line program, you will need to be a nerd or have a nerd friend or be able to read & follow technical instructions to get it running. Being such a respected program, it has a point-n-click webGUI (accessed via a web browser) but I've never had the best of luck with that.

https://github.com/rakshasa/rtorrent

Remember boys & girls - follow the laws of your country and you won't have any bittorrent-related issues.