I agree with Jeep - They are basically the same from most points of view and both have proven themselves hundreds, if not hundreds of thousands, of times over.
The Remington probably has more after market parts available, so you could probably trick it out a little easier/cheaper if you wanted to go that route.
The Mossy can probably be had a little cheaper, but that doesn't mean it's inferior.
Personally, I have shot both and wouldn't have any problem picking one up and putting rounds on target if I had too. I don't subscribe to the "shotgun for primary home defense" line of thinking, but that is just a personal call. Many people prefer the shotgun and it makes a damn fine choice, it's just not my first choice.
I have to say Jeep nailed it when he said chocolate or vanilla - I just happen to really like strawberry ( and redheads oddly enough