I like mine
I've only had it for a couple weeks (only 1 range trip so far)
Put a hundred rounds through it, no cleanring beforehand.
The thing took literally 2 minutes to clean. I ran a boresnake through it once, and took the carrier out and wiped it down. Done. It runs very clean, the mark23 required at least 15 minutes to clean everything with the same, about 100 rounds through it.
It is nice and light (with the aluminum reciever) and fits very well. I did notice the stock cheek piece will kick you in the face if your too close, but recoil is very mild for a shotgun. Its got a nice trigger too, heavy but crisp.
Personally, i say IF YOU HAVE THE CASH then go for it! Its a very nice shotgun, VERY nicely built, its light, and easy to maintain! Cant say i have experiance with any other semi shotguns though!
ETA
If theres one thing thats a bit of a drawback, its that the whole action is not quite as "simple" as a pump gun (obviously)
The whole principle is based on the little lock-back-switch to the right of the trigger gaurd, and the bolt release (which is quite small and a PITA to hit, but i think they make oversized bolt release buttons). The safety is a little hard to put ON, but this isn't a big deal IMHO.
If you do something like pull the bolt back, then let it go a bit forewards till the shell lifter comes up, then pull it back again, the carrier will get locked back untill you push the lifter down with your finger, but if your not holding the bolt back, it'll eat your finger for breakfast! (learned this the hard way

)
But once you figure the action system out (bolt lock back=trigger gaurd button. bolt forewards=bolt release button) and dont try anything fancy, its pretty simple.
Theres also a neat trick for it, i can tell you if you PM me, im not 100% sure of the legality of it (im sure its fine) but its cool

(not bump firing

)