I Bought a 935 about 3 years ago. I bought it because it was a Mossberg and because it was a cheap semi-auto. It was a lemon. Various problems included the ejector breaking off, firing pin strikes that only dimpled the primer (about 1 out of 5 shots) and the final straw that broke the camel's back was when it jammed the shell so far into the chamber the action couldn't pull the shell out of it. The rim around the shell was bent where the action had a hold of it, but the action recoiled without the shell. I went straight to Cabela's (where I bought it originally) after the hunt to show them the final problem and request my money back. As a side note, don't take a gun back to Cabela's with a shell in the chamber, even if it is spent.
That was fun.
Once I got the empty out, Cabela's was great about it and gave me a refund which I promptly used on a Nova. Decided I didn't need a semi-auto after all. That's been a fantastic gun.
I bought the Mossberg based on the reputation of them. I don't know of anyone who has ever had a problem with a Mossberg pump. I didn't know anyone else who had one of their semi-autos but figured it would be sufficient. I didn't expect a $1,000 gun but I didn't expect all of the problems either. It was back to Mossberg twice for repairs and I hadn't even put 100 rounds through it. Mossberg was good about repairing it and they never argued with me about fixing it. Cabela's mailed the gun back to them both times without charging me for shipping. Mossberg customer service was great. I just happened to get a lemon.
I'm soured on Mossberg, but like I said, I don't know of anyone who has had the problems I had with a Mossberg gun.