The biggest problem I see with the 930 is by far the barrel selection for it. I am seriously looking into one for 3 gun competitions, and as of right now there is no barrel that would work for it.
The 18.5 inch barrel is to short and not fitted for chokes, and the 24 inch is slightly to long and is ported (ported will put me in open class for 3 gun).
On Brian Enos forum, a rep from mossberg has said that they are developing a 24 inch barrel with no porting.
Benny Hill (a gunsmith from Texas) is working on a 3 gun prototype with mossberg. Jerry miculek is already using it in competition.
Ultimately, if you can live with what you have for now, Im sure they will soon produce something to your liking. Thats what I am doing!!