I have to agree with liliysdad. Practice, practice, practice. I have shot the 9200 and I would have bought that one but....Just shoot and have a great time! I have one and YES it does kick alot! Keep shooting!
I have one of those SxS's stashed away (Bounty Hunter II or something like that) and the external hammers were a big part of the reason I wanted it! I can load that gun and apply the tang safety. Hammers are down. I could leave that gun like that for a hundred years and it is going to fire when you cock the hammers, take off the safety, and pull one of the triggers. Being able to store it with hammers down means the springs are relaxed. It is both safer and better for long term storage.
And I always figure it would take a bad guy an extra five seconds to figure out how the heck to fire it if he got to it first. Between the safety and the hammers, I would have a chance to either run or jump on him. A lot better than taking a 12 gauge load of buckshot to the stomach!
Now if the choice was between the SxS and the FN semiauto shotgun....
I would go with the side by side since you want to leave it loaded all the time, that way you don't have to worry about spring fatuige. I don't even leave my moss 500 loaded for that reason. I keep my S&W 19 loaded instead. I would like to get a SXS also. can never be too prepared.
Spring fatigue is not caused by the extended compression of a spring, it is caused by the repeated cycling of said spring. In essence, you are fatiguing the spring far more by loading and unloading than you would by leaving it loaded.