I've been slowly working on my Brazil and when I bring people over to look at it, they are always blown away by the complexity of the whole "keeps track of balls, scores, etc. using wheels and gears instead of chips" thing.
I know nothing about EM Pinballs, do they have more complex workings or are the Bingos the most complex?
Mark
follow my newbie pinball repair successes and failures at: http://pinballrepairandlife.blogspot.com/