I am heavily leaning towards my new gun being an O/U. Why? My only SxS is a short barreled Beretta, which doesn't fit me very well, and as a result, unless I shoot this gun exclusively and a lot, I don't shoot it well. Because this is my only experience with a SxS I am reluctant to spend a lot of money on a new one. That is, until I've had a proper gun fitting done to which I can compare my "gun script" to the measurements of the Beretta. I have never had a gun fitting, and would like to know what a proper fit should be. By knowing and comparing to the Beretta I will have a better idea of whether I have a fit issue with this gun, or if I'm just no good at shooting a SxS. For what it's worth, I've killed a lot of birds with this gun, but consistently struggle at skeet and sporting clays with it. The results of the fitting will also help me decide whether to have a new, custom stock built to my "script".
I've also begun having second thoughts about spending big money on a 16 gauge gun. While 16 gauge enthusiasts swear it is the ultimate gauge I have a little trouble investing too much in a limited gauge. Finding 16 gauge ammo is not terribly easy, and I can easily see myself running out of ammo on a road trip, and being stuck without. None of this is meant to say that I won't be adding a 16 to my collection. It just won't be a terribly expensive one. Fortunately Browning makes a couple of 16 gauge O/U's that I would be happy to own. One is the Citori White Lighting, of which I currently shoot in 20 gauge and love. The other is their Citori Gran Lightning, which is a grade V gun, and offered at a very reasonable price. It also bear noting, that Browning has begun offering many of their field guns with 30", and 32" barrel options for those who either prefer shooting game with longer barrels, or shooting clays with lighter guns.
Browning 16 gauge Citori Gran Lightning
So where does that leave me? Quite honestly I am still very much thinking of getting the B. Rizzini, but rather than getting it in 16, I will probably get it in 28 gauge. I've got a short barreled 28 gauge Gamba O/U, and I like it quite a bit, but I simply shoot longer barrels better, so I believe the 30" barrel option on the Rizzini is the way to go. But,.....
There is one factor I haven't laid before you yet. There is a very high likely hood, in the 90%+ range, that I will be having a wrist surgery that will keep me from shooting any gun for several months. Because of this I've got time to think about it, and consider my options carefully.