You know, I never classified STP as a grunge band. For me, STP came out right when the grunge scene was popularized. The same goes for pearl jam. Grunge music for me was stuff like old Melvins, ultramegaOK, mudhoney...real noisy stuff with some rock influence that was more about the expression than the music. Pearl Jam's "Ten" was definitely a rock album. Nothing more or less than that. Same with Core. So heres my thoughts on each album
Core: early 90's Hard Rock
Purple: Hard rock with more artistic expression (a band maturing)
Tiny Music: Psychedelic Rock
No. 4: Amazing. (Hard Rock, straight up. My favorite album, way underrated)
Shangrila: An excellent blend of hard rock with art and melody
Thoughts?