hard to go wrong with the 870. look for an older wingmaster magnum, they can be had for a lot less than a new express and are a much nicer gun.

the wingmaster super magnum was only produced for a year or two, i've seen pictures but never handled one. guess remington figured that producing a 3.5" chambered gun in "high grade" was kind of pointless, seeing the conditions that most 3.5" guns are used in.