The best shotgun out there in a 3.5" chamber is the Winchester SuperX2. The SBE is a distant tie for third, preceeded by the Beretta Xtrema and tied with the Browning Gold. Having the SBE tie with the Gold is being generous to the SBE too.
I have owned all but the Xtrema, and hunted with guys using all of them. The X2 is head and shoulders above the Gold and the SBE in reliablilty. The Xtrema is a relatively new design, but looks very promising as my X2 did when I first got it.
My X2 has about 35K rounds through it and runs like a swiss watch. Nearly 2500 of them have been 3.5" magnums, lots of 1 1/8" light field loads and a couple thousand 1 ounce loads I make to shoot skeet and sprting with it. From day one it has cycled any 1 1/8 ounce light field or heavier load, and it will cycle most of the standard velocity one ounce loads too. The extra light loads? Forget it, they won't even open the bolt far enough to extract the hull.
I've spent a LOT of money on shotguns and learned a lot less than my expenditure should have gotten me, but I did find one whale of a good shotgun that does anything you can do with a shotgun.