P2P proggies

BT in all its glory, it's really not all that great for finding less common or new music, a few recommendations of good P2P proggies for the purpose of finding such would be much appreciated.
Obviously I don't want any crapware, adware or anything that does anything besides P2P.

Seconding DC++. However, you'll need a big share (1...100+ GB depending on the hub) to get in. Alternatively, if you're a selfish cunt, you can use a fakesharing DC client. Note that DC++ is not for occasional use - it is normal that you'll need to keep it running for days or weeks, if you want something rare. eMule is usually better, if you're impatient.