Having been coming to Piggy's for a few years, I can say that the food is consistently great and with the unlimited refills of side dishes, we always leave on a full stomach. The servers are also very nice and its an added bonus that they come around and help you grill the meat. My personal favourite here is the oogyupsal (pork belly).
If you're craving kbbq, this is definitely a step up from the "all you can eat" kbbq joints.