Hmm, a tricky round. All are good users who contribute, so I'm going to go on instinct:
5p: Boutros (COMG and all the great people in it would be nowhere without this man)
4p: CGI (occasionally we don't see eye-to-eye, but that doesn't stop him being a great user)
3p: curl6 (for a new guy, he made an impression straight away. Always around to help, and very friendly).
2p: Ethomaz (I thought I loved Gran Turismo until I met this guy!)
1p: TBone (Always making threads, keeps the community going).