I use WinMX myself because I never have any problems with finding files, fast downloads, or spyware. It may look menacing and hard to use, but it's really not. IMO, all the other pieces of software offer is a pretty face in return for your personal info - not worth it. Give WinMX another shot, especially the new version on their webpage...it's well worth it over anything else, especially as everything else goes bellyup.
Limewire rules. The recent versions of Limewire is loaded with spywares, if you want to protect your privacy, get the older version like 1.7D. Works the same but free of spywares.