Jackstack is in Martin City, to me its not all that good, the sister store on wornell, north of 435 http://www.kcsmokestackbbq.com
is way better, this place has the best beans in the country... and the there is Odens in belton,mo just dang good. Don't like Gates, way overpriced for what it is, same with JackStack (BTW the one in Downtown KC also)
Another good one is Rosedales on southwest trafficway.
There are many in KC... BB's & LC's they are all good!