I was going to order a SBE II from a dealer and he said it would take 3 weeks at the earliest. So I called around and found a SBE II 26" at Gander Mountain which came off the truck that day and I absolutely love it. A 28" barrel SBE II will go quick more so than a SBE II 26". I think there is a high demand for the SBE II and Benelli can only put so many out at time.
When shooting ducks I have always used 2 or 4 shot because it is slightly smaller and more bb's to hit the duck. BB is bigger and there are fewer bb's, but will penetrate the goose better.
If you are going to hunt in unfamiliar water and do not know the depths, then I would use a wader belt in case you fall into a pot hole. This will help prevent water getting into your waders. Learned the hard way!!!