On that day in that moment, w/o even an expectation of having pork cross my lips I would say that Border landed in the top 5 at #1. One thing about BBQ is that each person has their own taste (enter a competition sometime and look at the judges sheets at the end of the day - they have 7 judges for a reason) , not to mention sub categories like slaw and beans.
Please do K.C., the overall experience can not be matched (although Memphis is fun), you could do 7 days of nothing but BBQ joints and still be confused as to what is best.
Not that many years ago the parking lot at Arrowhead before a Chiefs game could give many joints in town a run for their money, wouldn't reccomend the Chiefs game now (l.o.l. I say this as a lifetime Chiefs fan that has seen it all) but the parking pass would be an interesting stop on a BBQ tour.