This battle has went on on this site many many times. Its all gonna come down to which one feels better to you. Some like the feel and the better look of the 870. But some of us like the better slide release location, and better safety location of the mossberg. Its a give and take sort of deal. For price I'll take the mossberg, but for available mods, I'll say the 870 since you can add mag extensions. (although my mossberg maverick 88 came stock with a 7 shot mag tube )