I've tried to cover different manufacturers and types with my little collection... Bally, Williams, DE, Sega, Stern, Capcom, P2K, and an EM. Other than Twin Win, everything is a DMD, but that's because my nostalgia is with those pins. I wasn't exposed to the pre-DMD games, but have enjoyed the few that I've been able to play. I'd actually love to have a BTTF at my house so that I could play it in an environment where I could hear it and understand more.
As far as DMDs go, my mom can't play and watch the DMD at the same time, so she'll make me play so that she can watch. I mostly know what is going on with the games I've had awhile so I tend to not pay attention except to glance at the score or ball #, but I just got NGG and find myself watching the DMD more now with them. Love my taunting gofers.