XBT Client

XBT Client is an easy to use BitTorrent client that comes with a well-organized and clean interface.
It's pretty difficult to get lost in the main window, as everything's quite intuitive and not only that it gives full control over the torrents you're currently downloading, but it also provides access to the other features of the app.
Besides the fact that XBT Client also features an UDP tracker and a torrent maker, the application shows a great amount of information for each opened torrent, including name, percentage, left, size, downloaded and uploaded, download and upload rate, leechers and seeders, priority and state.
Plus, you can see torrent details, events, files, peers, trackers, global details and events, all from the main window, which is a great feature for beginners and more experienced users alike.
With a dedicated keyboard shortcut for showing and hiding the main window, XBT Client gives you the power to set file priorities and upload rate limits, while also featuring a web-based front-end for easier control.
It's also recommended to have a look in the options menu as well because it lets you set up the seeding ratio, the number of upload slots, peer and torrent limits, download folders, public IP address, admin, peer and tracker ports.
XBT Client works like a charm regardless of the Windows version installed on your machine, while remaining very light on hardware resources all the time.
Overall, XBT Client is clearly an advanced BitTorrent client that features not only a very well-organized interface, but also a great amount of configuration settings.