If you really, really, want the "best" BBQ, there's only one way to get it.
Get certified by the Memphis in May committe as a BBQ judge and then go to the contests and judge them.
Or do the same for the Kansas City group.
Either way, you will get BBQ cooked to a 15-minute window for absolute perfection. There is no way that any restaurant can cook food to that demanding standard.
Best part, it is free food!! (Well, you have to pay your own way, pay for your own lodging, etc., but what price perfection?)