I got a dip "+25" but it was back when the rumors were flying and no one could get ahold of the dip crew. The base arrived in a +25moa box, but I'm thinking it's level....
I have a 30moa from murphy precision. You have to call them because it is not listed on their site, but they will make one to whatever moa you desire for the same price as any of their bases. It arrived in about 2 weeks.
plus the murphy precision are stainless instead of Aluminum. There is just something about bolting together two different types of metal and hoping they won't expand and contract at different rates with different temperatures.