Originally Posted by Maiden33
Generally I think in order to qualify for this list, the album still has to stand up to the band's best work at any point of their career, if it isn't their best work specifically, it has to be close.
I didn't consider it in this way, because the question was favourite debuts, not bands who's debut album is (one of) their best.
Which is why I did include bands with only a couple of albums, if their debut really was damned good. And plenty of bands who have bettered their debut several times, but the debut is still a great album and better than most bands' debuts.