We bought a Mossberg SA-20 and it's turned out to be a great little shotgun. It was between the Weatherby and the Mossberg. After shooting both we went with the Mossberg.
This is the way I decided to go. Randy Wakeman over on Shotgunworld.com, reviewed them and was highly impressed and even called it the BEST 20ga. semi auto under $500 he's ever tested!
I found a wood stocked 26" SA-20 at a LGS for $350. The action bars were rubbing a little on the wood forearm, but a little time with a file and problem solved! Now the action is butter smooth and has fed everything I've put in the magazine.
It even comes with shims and 5 chokes! Not bad for a $350 gun.
I still wish I would have gotten the Montefeltro, but I'm also very happy with the SA-20!
Elk Country