I was gonna let it lay, but I agree. Mossberg makes a good field/workhorse shotgun. but I have heard and read many mixed reviews of the 715. If I get a .22lr (this thread was speaking in terms of a 9mm carbine) it would be a S&W 15-22 hands down. I would have to find one under $400 though. As far as getting a worthwhile 9mm carbine, I'll be getting a CX4 storm eventually.
I have been nothing but pleased with my 995. Now I really could care less what you decide to go with, but don't rule out the 995 just because of the price. They're dead nuts accurate and reliable as all get out.