I had two 835's (bought one, couldn't get it to run, got a new one out of it), feed failures were a daily part of life with it. Went back to an 870...
Then a few years later I had an impromptu range day on a business trip, ended up buying a Benelli Supernova (after handling a friends Nova a year before) because it had a good price, and I figured I could unload it for an "acceptable loss" shortly after if I didn't like it.
Now I have 5 Supernovas. Love them.
Last year while calling, a buddy of mine, that usually runs an 835, hit feed problems on back to back stands, so he borrowed one of my Supernovas. Since then, he sold his 835 and bought a Supernova.
THEN BEYOND RELIABILITY... A few shots at the range with both side by side and the decision is easy. My wife (5'3" and 130lbs) runs 3.5" rounds out of HER Benellis Supernova, the Mossberg unfortunately kicks a heck of a lot worse.
Both will have followers, but in my experience, the Supernova is a better shotgun.
Now, the 935 is a different animal. Comparing a semiauto to a pump just never seems fruitful for me. Typical of most semiauto shotguns, technique is critical. My mother picked up a 935 last year ("upgrading" from a Franchi 20ga to a 12ga for turkey). She's none too big, so unless she was aggressive against the stock, to resist the recoil, it failed to eject. 90% of the time on my shoulder, it'd cycle without fail, if I got sloppy shooting clays in the backyard and didn't shoulder it tightly, it'd fail to cycle. BUT, again, the 935 will have it's followers. It's not bad weight-wise, not really my taste on handling (bulky, feels like they started with a pump gun then figured out how to make it semiauto, lacks elegance), but it seems to run well enough when you treat it right.
Comparing a 935 to a Benelli Semiauto, there's no comparison, but then again, you're talking about double to triple the price as well.