Bump!
I'm a little late to the party here but liked the topic.
Group 3 for me, though I really love the Bally's right through all three groups. Not that I've played them all but the ones I have played are some of my favourite games and the ones I haven't played, I look forward to the opportunity to play. There really is something about this era of games, unique themes, great art work. It's all very compelling, I wish I could own them all!