I recommend retaining the OEM Benelli adjustable stock.
The ATI raven stock is "good looking" and offers a bigger range of length-of-pull adjustments compared to the OEM stock. Furthermore both the stock and the pistol grip have softer padding to absorb the recoil.
However a notable drawback is the requirement for additional tools for assembry/dissasembly and the design features numerous moving components that are prone to lossening or breakage over time (the castlenut that holds the pistolgrip, the spring lever for stock position adjustments, a number of screws et.c.)
The OEM stock needs no tools and is indestructible.
I owned both the ATI and the OEM stocks and eventually i got back to the OEM.