Benelli's are the BEST.
I've shot everything from SP-10's, to 1100's to Extrema's and everything in between. All of them were heavy and gas operated, which made them jam if not cleaned properly.
My brother has had his Benelli SBE for 2 years and never had a problem, it's jammed once or twice, but cleaning fixed it.
I've owned a Benelli SBE II for a month now and LOVE IT. It hasn't had ONE PROBLEM. But I made sure to "Degrease" it first.
Three of my friends have Benelli's, one is an SBE and the other two are SBE II that were bought earlier this year. NONE of THEM have had any problems. The fact that they bought them all had a lot to do with how well they saw my brother's and other of our friend's Benelli's work.
What you AMMO you shoot plays a big, big part. Make sure your shooting good name brand ammo and you'll be ok.
Secondly keep your gun clean.
After that, it's up to God. So do those two things and your gun should work great. All I can say is I love Benelli, and from South Dakota pheasant hunting, to frigid MN cold goose and duck hunting with water and snow and mud, I've always been continually impressed with how Benelli's keep working. It's the best Auto Loading Gun out there, PERIOD.