My vote is for the Marlin. I've got a 795 which is the mag fed version of the 60. I put a set of TechSights on it, added some weight to the stock, put a set of 1.25" swivels on it. I also cleaned up the hammer and sear a bit. This rifle shoots VERY well and is not fussy about ammo.
I have no experience with the Mossberg.