I don't think he meant concept as in a true concept album (plot etc.)...rather, as in conceptualisation, and how its realised (the concept of Gumma is the four band members contributing four different solo efforts)

EDIT: Gumma is better, just for the sheer awesomeness of Narrow Way.

AMLOR works well because it has more of an LP feel, but Old Floyd ALWAYS beats Dave Floyd, no matter what the competition is.

ALWAYS.

__________________
I'd always thought Clive was a bit odd, but when I found him hanging from a noose from the ceiling, I stopped talking to him....

I'm Satan, and you're a fool because you're buggering up your turntable.