Dude if it for torrents then you have to use UTorrent. I'll give you a link. Just simply its got the simplest setup, with the best features, no spyware in the file or anything. hands down its the best one out there. Also I would suggest getting PeerGuardian2 and setting it up to block everything it can, it will block some programs or websites you could frequent but it keeps your computer 10 times more private than it would be without it. trust me you'll sit there and read the list of different ip's and where they are coming from that try to connect to your computer.
Http://Utorrent.com <------UTorrent
http://phoenixlabs.org/pg2/ <--- Peerguardian 2