I know what you are saying Paul.
The debut and SATD are heavier and harder edge. Theatre, Girls and Feelgood are all great, but I found a bit too poppy/sugary. If they would have just made the albums a bit more guitar heavy, I would like them even more. But overall, the first five Crue albums are all classic rock/metal and I enjoy them all.
The self titled really has to be classified on it's own as it's a completely different sound and vibe. I thought it was pretty good, but nothing I would go out of my way to listen to.
However, Generation Swine, New Tattoo and Saints, besides a handful of songs, are terrible.