My friend did a dove hunt in Argentina and Benelli sent a few of them down for the group to put some rounds through. He said he put over 5,000 rounds through a vinci without a single failure but did manage to toast the barrel from shooting off ammo as fast as his "ammo boy" could hand it to him over the course of several days. He said it wasnt a flaw in the gun, its just that you are shooting so fast and for so long that you can warp just about any barrel if you dont use caution.
Moral of the story, not one failure on the guns part.
They are goofy looking and don't feel right but I shoot them exceptionally well and are reliable. With that said if it is in your budget and that's what you want then buy all means buy it. I ould try and shoot one before you actually purchase it to make sure that it is what you really want.