Each gms have a special talent so its hard to pick.
Assazin- Great friend and treats everyone respectfully.
Firebolty- Works hard in many places, he does a good job on the forums as well.
Erth-Hosts great tourneys to entertain the players.
Ejm-Organizes events and keeps people in line.
I haven't gotten to know the rest but I am sure they do there job greatly.