It's hard to say if Quake 1 or 2 wins for mods with me, because I played a freaking lot of mods for both, and the communities were phenomenal. Quake had more SP mods, and a bit more creativity there for sure, but Quake 2 had gobs of legitimately good and different MP mods for the time, nearly all of which were pretty fun to play and which were well supported by the community. I never felt like I couldn't find a server for something, you know? Even the stock game always had servers.
And you know, I never really played much Tribes CTF. It just never seemed to work out. I played a lot more of that in Quake 2, and a lot of TDM. Quake 3 I played almost purely deathmatch. If anybody prefers 3 to 2 I'm willing to go that route as well. Many happy Friday Night Frag Fests were had at PlanetQuake with both games, and I'll be happy to relive the memories any way I can.
I gotta' eat dinner and junk, but I'll get the game running (hopefully) with that port you suggested and come on later. And I'm totally FRAPSing how badly you all slaughter me.
Also, repost the port and stuff idol, or any mods you want to use, for those who want to join up.