Very nice piece Dal! I have handled both these new Rizzini's, and all of the AYAs. I own and shoot well a 28 AYA #2.

Before I saw that you had bought this beauty, I was going to suggest that Mark Reynolds' Bournebrook is the most equivalent to the BR550, but likely for 2 grand more. They are however beautifully finished and the near equivalent to a #2..
http://mwreynolds.com/HTML/shotAYA4Round23511.html

I don't think you can go wrong either way. Enjoy the Rizzini!