I've never listened to either of those albums. I'm compelled to do so. As for lack of depth on Poison's Look At What The Cat Dragged In, that's one of the main criticisms I have with Glam Metal in general and the main thing that has kept most...if not all, from aging well over the years.
You're off to a great start with your album choices. Now time for you to hit up N.W.A.'s Straight Outta Compton if you're really going to step outside your comfort zone.