My wife and I have been to Old Carolina many times. They have a few different sauces and a good selection of meats. Everything here is tender and full of flavor. They have pretty good vinegar slaw which goes really well on sandwiches.
I was down in Durham, NC in April of 2015 and I will tell you that this tastes exactly like the famous BBQ places down there which really impressed me.
The only drawback is the prices can be a little bit high, but still affordable.
Overall I would strongly recommend visiting here.