I don't know if the Mossberg is
really a good choice, due to the consistent problems the 12's and I believe the 20's have had.
I'd wave up a bit more money and spring for an SKB. It's a forever gun.
There were some debates about the Mossbergs, and a few owners chimed in about how theirs were fine, with no trouble. A few months later, the threads were revived as they reported that they, too, had firing pin breakages. I believe there was at least one 20 in that mix.
I was just saying that, if someone wanted a low-volume .410, the Mossberg might suffice. As for me, I'd look for a quality used gun instead, or maybe spring for a new SKB if I came up bone-dry on used ones and wanted the best bang for the buck. Berettas are a bit more, but lighter if you want a really svelte little sub-gauge. Of course, then we're climbing higher up the old price ladder, maybe a bit far for comfort. In 28, but not .410, the Franchi Renaissance is a neat gun, light and quick, nicely made, and not at all expensive for its class.
There are some nice old American SxS sub-gauge guns, too. They're more expensive than old 12's, but they're cheaper than new guns, tough, and with a major neat-o factor.