Between these two, the Remington hands down. Mossberg's are nothing but problems, cheep wal-mart specials. I have put my 870 through h##l and back and it has never missed a lick. Squirrels, rabbit, dove, duck, geese, deer, you name it and it has shot it. I'm so attached to it I'm almost afraid to buy a new gun.
Trying a Benelli SBE this year.