Greetings thundermaker and welcome aboard.
As you're aware, with the holiday sales, there are quite a number of guns under $500. The best gun is hard to define. Between the Benelli and the Remington I'd go with a wood stocked Remmington (possibly a used Wingmaster over a new Express). But, it's just because I'm an old school Skeet shooter and shotguns are supposed to be blued steel with wood stocks. IMHO, even the black Benelli field model looks "tactical" -- I don't mind my AR being black (it's a mil-type gun), but I like my sporting shotguns guns with wood. YMMV
Since you seem to be over budgeted, spend some time and money getting in some trigger time before you make your decision. Please, don't get overly concerned, and lose any sleep, thinking that you must get the best gun. This is your first gun, and what's best for your present abilities may not be so as you gain experience. Unfortunately, like much of life, you can't really make an informed gun choice without shotgunning experience and you can't get the experience without a shotgun. I often tell new shooters to consider their first shotgun as their learning gun, with it you'll learn what you really need form a future best gun.