Last night I needed to add lump to the egg. In the garage I had 4 bags of Ozark Oak and 4 bags of Royal Oak. Last 2 or 3 bags I've used were RO and the quality was fair to good. The RO bag I opened last night was probably the best I have ever seen/used. Perfect size pieces, almost no dust; fire was perfect. This bag came off the same pallet as the others I bought but the quality was definitely different. Just prooves what others have said, one bag may include a big rock and the next one all good. Lump is like a box of chocolates, you never know what you're going to get.