I really like the Magpie side, in fact I'm using it as the main drive for most if not all of the songs we're doing this week. I mostly bought the Odessa as a two channel independent drive, because I really like a BB type sound and I like the more rocking sound of the Rook with switch down. You could probably set it up to sound great stacked, but that's not what I'm using it for. Both sounds I have set pretty scoopy, and don't really have the occasion to use the Rook in that fashion for this gig yet. The much maligned Blackbird drive channel is as "meh" as many have said before, but I could see it being good for a midrange heavy syrupy lead boost with the gain low. I may try that for stacking for lead sounds sometime.