I had one of the early ringnecks (12ga, 28" barrels, single trigger, prince of wales grip).
That one actually broke after about 5000 rounds and I sent it back and they sent me another one.
That one started to double (both barrels at once, pretty fucking exciting) after about a 1000 rounds, it's back at CZ now.
having said that, it's a hell of a value in a SxS. For under a $1000 you can't touch it in anything else.
I'd still buy another one.
I have a Beretta SilverHawk 471 now that I use a lot, because well, SxS's rock. But it's a much more expensive gun (and you can tell)
The shorty guns are only for cowboy shooting, get the longer gun. And BTW, the shorty ones aren't made anymore (2008), they fell out of the catalog. My buddy tried to order one for HD (don't ask, i've tried for 3 years to convince him to get a pump) and that's what they said.
Get one with an English grip (straight stock), I've had both and once you get used to it, the english grip is the way to go.
Enjoy