hey JRR. just a comment for you. being 5'10 290 pounds. i know where you're coming form with the width thing. i personally dont find it to be an issue and of course i've never used an HH product. the business tactic over there turns me off to it.
in any case, the blackbird also has a shelf. which the HH doesn't have. it seriously fits so much stuff in it. i mean i've left my pot of half eating food in the thing and still had space for like a book, my water bottle, a headlamp, an mp3 player etc, etc.
also, it has a footbox. the footbox, for lack of better words is awesome.
i find the blackbird, by measure of features, to be a better product FOR ME. i just felt it was necessary to throw in the fact that the shelf and the footbox are deal breakers and without them, well. i dont want to think about that...