Owning both...I prefer the beretta in the auto.
Lots of guys around here duck hunt with benellis and berettas. The only way the benelli guys can get their SBE's to go BOOM more than once is by putting a surecycle system in them. Just too finicky in a wet, muddy duck blind for me. Reminds me of a Jaguar...when they run right they're hard to beat but they hardly ever run right!!!
Do yourself a favor and go with the beretta!