i have had my remington 1100 12gauge for almost 20 yrs now and other than one time when i left out the 'o' ring that fits between the lower part of the bbl and the mag tube, it has NEVER malfunctioned, period end. i have a 26" bbl w/vent rib imp cyl and a 22" rifle site bbl, its a versatile combo imho. the slug bbl shoots pretty well too, and the gas system really reduces recoil vs a pump, which is nice when shooting lots of slugs/buck in a day. the rifle weighs little more than a pump, and carries well too.
i dont have a benelli, but a bud does, they are also good but pricey imho.
my dad loved pump shotguns so i have quite an assortment of them now (ie remington/winchester/savage/S&W/mossberg/stevens) and i grew up shooting them, had a savage 12gauge in 5th grade lol, and have always loved them also.
for the money, its very hard to beat a good pump, much cheaper than an auto, a little lighter, it should not jam on ya, ya can have shorter bbl (on my 1100, bbls shorter than 22" wont let the gas sys operate right) - cons of pump are stiff recoil, and, well, thats about it. my wife shoots a remington 1100 20 gauge and a 870 20 gauge also, and sometimes she will 'forget' to pump lol, which is quite funny to see, never has tried to pump the 1100 though, lol, or i havent seen it yet anyway.
if money was no object, i would prob get a benelli myself, but aint nothing wrong w/a pump imho.
greg