The wife and I were wanting a vertical stand for our rMBPs. I ordered the updated Bookarcs early this week from TwelveSouth. They arrived today. They ship with insert #5 (for cMBP) installed. It took a few seconds to remove it and put in insert #7 for the rMBP. If you get one, pay attention to the fact that the insert has a front and back to match the slightly different profiles of the rMBP top and bottom. Using the stand really frees up the desk space. I image it allows for better radiant cooling as well. No the stand are not inexpensive....but what is with a Mac? But so far, we like these very much.