Pinburgh is in my opinion the best tournament format there is: ten rounds of qualifications, each round providing four different games from different eras to play in four-player groups. Also the final rounds are played in four-player groups with four machines. This is how the B-division finals looked like in Pinburgh 2012.
2012 Pinburgh Division B Finals – Lord of the Rings.
2012 Pinburgh Division B Finals – Fast Draw.