I have owned Winchesters since I was a kid, first shotgun was a 20 ga 1400. The SX series comes apart when you uncrew the magazine cap. 2 pins hold the trigger group in. You can take it apart in a blind, hose it out with Breakfree Cleaner, and be back in business in a few minutes if needed. The alloy receiver and Duracote finish are pretty tough.
The old adage that the gun shoots better dirty is just another excuse to abuse a gun by not cleaning it properly. Just like washing the car and changing the oil, all equipment needs maint. to run properly. Duck hunting introduces seeds, bits of blind material, mud, and water into the guns internals that end up with rust and malfunction. Most modern shotguns break down to essential components quickly and there are wonderful aerosol cleaners to blast it out. I always stand my gun near a vent for several days to dry it out then clean it if it was not too bad. If I sit out all day in a rain or snow storm, I take it apart and clean it when I get home.
The Super Black Eagle is a design that has been around for 20 years and works great. If I remember right, it is a recoil design instead of a gas piston action like the SX3. Gas pistons are sometimes more sensitive to lighter or heavier loads and can sometimes fail to cycle. The Vinci is a gas piston. It is a newer design that has only been out for a few years. Just because we have not seen any issues does not mean there are not any. Search the net for reviews.