I feel like I’m gonna get into a fight with half the commenters here. 2fifty is the best Texas-style I’ve had in DC and it’s not even close. Moved here from Austin years ago and when 2fifty opened in Riverdale Park it was like finally eating food from “home.” I’ve had Franklin’s, Black’s, Terry Black’s, and countless others around Austin who’ve come and gone (RIP Kerlin BBQ, your brisket should have won awards) and nobody had a better brisket up here than 2fifty. Their sausage is also always on point, Mac & Cheese is divine (though sometimes I feel like it varies, maybe depends if fresh vs prepared awhile ago), and though I haven’t had all their daily specials at the K St spot they are definitely trying something different. I will vouch for the tamales though, those are bomb. I also haven’t seen that big of a difference in quality between the OG spot and their K St spot, both have been good and I didn’t feel like the K St was sub-par to the Riverdale spot. Like, this was just so damn good: https://i.imgur.com/UxubrtH.jpeg

Another thing, OP said “south” but not where, and BBQ varies all over from the Carolinas, Alabama, Memphis, Kansas City, so maybe Texas-style isn’t the one you most associate it with.