TBF I’ve not actually listened to Mellon Collie. I got bored trying to make it through Siamese Dream after the 103rd endless wibbling guitar solo. And this was after seeing them live at Glastonbury 1998 and thinking they were OUTSTANDING. Very odd.
Not sure range matters much to be honest. To me every SP song sounds very similar because Corgan’s style is very similar, whether it’s going for an electronicy thing or just your normal guitar thing, and because his vocals are so specific too. Radiohead have huge range too but at the same time they always sound exactly like Radiohead.
Nirvana are obviously a much much much better band than any other discussed here, barring the Pixies maybe. And even then while I admire the artistry and craft of the Pixies, they haven’t ever managed to write songs to the same immediate level that Nirvana have. And I am a man who loves a good song. Nirvana wrote some of the very best.