1 Quake 3 Arena. Nice game with nice mods. Good framrate and smoothness. 2 rock n roll mods; osp and cpma. Nice quakefeeling.
2 Quakeworld. When you push a button the things you want to happen happens right away!!!! Fast. Classic.
3 Quake2. Tactic. Great feeling and doublejumps.
4 Quake4. Feels like UT or something. For now it feels that only common thing with quake is the name. Time will tell if it will count as a real quakegame.