You'll get no anti-AC/DC sentiments from me! :) I've got just about everything they've done, including the Australian versions of the early albums. Well, except for some of the DVDs.
I agree that the stuff with Brian has never quite equalled the Bon years, even though he's been with the band 3 times as long now. Powerage is the pick of the bunch for me.
(Oh, and I like Jethro Tull. I'll take those four consecutive listens of Aqualung, voluntarily!)