I think the fact that you're shooting a sxs says you're not in much of a hurry nor trying to stack birds higher than the next guy. But I do like ejector guns.
A pump or auto indisputably has the edge to either get the third shot (or forth and fifth shots in some situations where legal) for anyone. For reloading I can get two more shells in a pump or auto faster than any double ive used, especially an extractor gun which adds another few hand movements.
On weekend clay shoots, our squad of misfits often will do a forced reload on a true pair with the second clay something like a teal presentation. The break open guns are much more difficult to reload a single shot and get the gun on target. But of course that's the whole point of our shenanigans. With a pump the mass of the gun is not swinging off target line much, and can even stay mounted if practiced a bit. The reload in a pump is faster by far for my feeble skills.