Tried Q39 this past weekend and really enjoyed it. I was a bit skeptical but it lived up to the hype, albeit at high price for a bbq joint.
Atmosphere inside is good, certainly a far cry from the prior Chinese buffet. Wood slats, concrete, edison lights. Rustic chic. I like the garage door with two patio tables and nearby "semi-outside" bar tables.
I had the Black Angus brisket and burnt ends plate, with apple-slaw and baked beans. Brisket was fantastic - three thick slices with perfect smoke char. Burnt ends also very, very good (mmm meat candy) but a bit of a stingy portion IMO, just a handful of them. Baked beans have a unique flavor, more tomato/onion than most? Slaw good and fresh, a nice counterbalance to the meats. Also came with a small side of OK cornbread. Quality of the meat was very high though, just the right amount of fat and cooked perfectly. Certainly a step above my last plate at Gates, etc. $16 for the plate.
Companion had the half-slab, which were also great but came pre-slathered in sauce. Two sides, he added $1 for the fries along with the beans. $20 for the plate w/ fries.
We were only given one sauce, a tasty but perhaps overly sweet one, though I've heard since that they offer multiple sauces.
Had a couple BLVD drafts - they had a decent selection of beer, a good selection for a bbq place, including Tallgrass. Around $5-6 a beer IIRC.
Overall, a really nice addition to the KC scene - I like the actual restaurant-quality atmosphere, the interesting and diverse menu (chipotle sausage, burnt-ends burgers, bbq salads), and the perfectly cooked and smoked meats (most importantly). Prices are rather high (burgers/sandwiches do not come with sides at $8-12), but worth it. And mega bonus points for turning that dingy old strip mall Chinese buffet into a sleek, instant-hit addition to the KC 'Q scene.