Not bad- I have a 590 Special Purpose (same thing, but not marinecoted)
and I love it. If you want an even badder one, look at a 590A1. That thing's a tank.
But I went to the shop yesterday, and they had an FN Self-loading police Mark I. now THAT's a beast of a gun
lpl (who shouldn't be talking, having just bought a used 590 9-shot MarineCote... not moving onto a boat either, but it was too good a deal to pass up for $240)
That is one of the two guns the guys here use when they run to the Bahamas fishing. The other of course is a stainless 870. On general principals I would choose the 870.
The Mossy would be an excellent choice if you need the rust resistance, otherwise I'd go with something a bit less flashy. I'd for sure take the 590 over an 870 but in reality both are excellent. I'd also consider the Mossy 930SPX.
I guess I'm just an old noob cause I had to Google SHTF to figger out what you guys talkin bout. It's not something I hear down at the pub or out at the range. Does it mean "Stuff hits the fan" or a similar phrase?