Tony, I'd start a new link, this was about memphis, and you're asking KC. You'll get more replies that way.
For me, there's a good link, below to a group who have done nothing but try to visit every joint in KC:
G.A.S. BBQ KC Restaurant Reviews I worked on a project at Sprint for almost 2 years there. If I only had one to go back, I'd go to L.C.'s, the original hole in the wall place, where LC does his books out front at a table with the customers.
A real close 2nd would be Oklahoma Joe's.
I'd even recommend Fast Eddy's new place, but I haven't been.
There are some KC locals, they'll jump in with their favorites