The differences between the remington and the Mossberg are mostly cosmetic both tend to function flawlessly. i for one do not like shiny firearms but that is an old personal prejudice.
Stay well - Stay safe - Stay armed - Yorktown
I've had my eye on the Marine Magnum as a home defense weapon for a while, myself. The only downsides that I can see are that the finish doesn't lend itself to concealability in the dark, and I've read that the bead is plated at the same time as the barrel and action, so you'd need to crack the nickel if you wanted to put different sights on it.