client wise:
uTorrent is the best by far
Azureus is a solid 2nd place though.
bitcomet is hogging up resources on torrents, its gonna get banned VERY soon from the top places.. its a piece of shit that steals bandwidth to attempt and increase its speeds, and fucks it up for everyone else
So is BitLord, fuck both of those programs from the same company. Everyone in the torrent community is pissed off at what theyre trying to do. Its nothing but negative to the entire system. The original creator of the torrent code is going to find a fix for them within a month and then they will wallow in inferiority.
The best PUBLIC sites are:
1) Isohunt.com
2) Torrentspy.com
3) Demonoid.com
The best PRIVATE sites are:
1) oink.me.uk
2) Torrentleech.com