Great read Greg .
When I first got into collecting pins I would've said that I was a DMD guy hands-down . As ,like EM's for you , it's what I grew up playing the most . I actually grew up in the era that seen the transgression from SS to DMD and have a few titles from each era which have high nostalgia value for me (some of which I am fortunate to now own) .
After being to quite a few meets my appreciation of all pins has grown and I enjoy walking up to an EM for the first time and having a good old simple bash .
IMO a "good" collection of pinballs is one that offers variety but most important of all is fun .