Eric makes several good points. When Bryant's is "on", it's outstanding. Even though I also like Jack Stack a lot, for me a big part of the BBQ experience is eating it in a "joint", not a "restaurant". I do have a weakness for Gate's sauce, though, and give it as a gift to my out-of-town friends. All three places have their merits, but Bryant's is arguably the most authentic "Kansas City BBQ experience" for someone visiting town. Plus, you can check out the jazz museum (such as it is) and the Negro Leagues Baseball Museum just down the street while you try to get the sauce out from under your fingernails.
Fries cooked in lard are the best, you are correct, Eric. I mean, do you want to live forever? The guy serving 'em just grabs a bunch off a big pile and tosses 'em onto your plate. I call them "clench fries".
IIRC, the Bryant's sauce recipe way back when had a significant amount of hog's blood in it. I expect they've toned that down a bit.
Damn, I'm jonesin' for some 'cue now.