We've been there before a few years ago, the one actually in Driftwood is the one you want to go to. We liked the food quite a bit, and we sampled many of the meats. Plus the vibe of the place is pretty cool, at least it was when we were there, summertime with a band playing. It's a little $$$ for BBQ, but I'd go there again.
Not that you asked... But, the only place we've been in Lockhart was Kreuz, and honestly, I thought it sucked, and my wife hated it. It was a neat place, but the food was terrible. I'd put some of my worst efforts up against what we were served. The brisket was like over done dried out roast. I've had better at Dickey's. I've heard great things about Smitty's and Black's, but haven't eaten at them...yet.
We've also eaten at Mueller's in Taylor. I really liked it, but the wife was neutral. Got a dino bone just for posterity, and geez that thing is huge. Also tried their brisket and sausage. All were good.