Avis Presidents Club - Invite status via Centurion, Continental Presidential Plus Card and via corporate contract. Guaranteed car availability and 2 class upgrade although you can request whatever you want and YMMV. Avis Chairman - Invite top status - given to corporate contracts and netjets members. Same as President plus terminal pickup/drop off and you pretty much get any car on the lot. I have Avis Presidents Club and find it to work very well. Any Chairman members who can comment?