You guys are lucky. I've been to 3 current parks - Wrigley, GABP and Guaranteed Rate. Apparently my mom took me to a game at Cleveland Municipal when I was a baby (I was born in a suburb but we moved when I was 1). That's it.
Guaranteed Rate was better than I thought it would be (getting cheap club seats helped), GABP was fine but unremarkable, Wrigley is Wrigley.