Besides 4DR, of course! Do you have any clans or specific people you really enjoy playing? Honestly, I can't think of anyone else besides 4DR, but I mainly wanted to see what other people have to say.
I usually feel good when I find someone I personally know online, like from this forum or from an xat chat... or if the last time I saw them was during NWFCObviously when I'm playing with 4DR. I don't really get excited when playing a type of clan. I get excited from specific people, but not clans.