Limewire is the best P2P.
But if you want something better than download Utorrent. Faster searches, better results, better quality. You could also get Torrent Harvestor as well, it searches most of the torrent sites for you, quickly.
Invite only sites, best would be UGS Torrents. It is possible to get one without an invite too though.
Used to be a general, just lost your spot - Inspectah Deck
Go Habs Go!