Transmission
Features
Even though Transmission is very lightweight and easy to use it is still packed with features: Seamless configuration of your network, intelligent banning of peers who send corrupted data, protocol encryption, and built in Peer Exchange.
Everything is configured automatically, allowing the user to just get on with downloading files, rather that worrying about their settings.
Transmission also has an advanced bandwidth manager, so you can control exactly how much of your bandwidth it uses, and when.