I don't think Stonefire has beef ribs (at least the one near me doesn't), just baby back pork. I can't agree with Chowvhow on the pork rins. They were too dry and smoky for me. The sauce that comes with it was too sweet for my taste.
My experiences with Robin's beef ribs have been consistently bad. The beef ribs weren't smoked for long enough, were under-seasoned, and tough. The only thing I have liked of theirs is the blueberry cornbread.