I was at Joe's for lunch recently around noon and the line wasn't too bad, at least not near approaching the 45 minute norm I had been warned about. Took me about 15 minutes to get through the queue. I thought my pulled pork sandwich was outstanding and can see why Joe's is rated so highly.
Just to clarify - that was the Joe's at W 47th Str, KC, Kansas. I understand there are now three locations.

Also made it to Smokehouse and was not nearly so impressed, although the baked beans were great.