I have an old 3" Remington Express pump that has ( sans braggadocio ) killed literally hundreds of ducks, certainly hundreds of geese, and countless dove and quail (not in this country).
It is absolutely reliable, relatively inexpensive, made of cheaphardwood & steel (other than the pot-metal trigger guard), is NOT camouflaged, and is definitely NOT pretty. It is suitable for use witheither lead, steel or other non-toxic shot with the appropriate choke, and if need be, buckshot or rifled slugs.
By altering the face of the buttstock where it joins the receiver, I've changed the height of comb to raise it and altered the angle to provide cast-off to suit me, changed the recoil pad ( to a Pachmayr Decelerator Old English ) and altered the pitch to what I like while I was at it. It's also had +/- 8 oz. lead added to the buttstock so that the balance point falls through the extractor plunger hole.
I don't recall ever short-stroking it, stovepiping a cartridge or any other kind of malfunction. It's been in the mountains, foothills, flat-assed prairies, what passes for desert, uplands, farm fields and, every kind of wetland - including salt marsh and mangrove swamps - and has performed beyond all reason in every kind of nasty weather imagineable, from the steamy sub-tropics to the sub-arctic. ( A minus 34 C. January goose hunt stands out ... a few guns [ and hunters ! ] weren't working properly that particular day )
It's won a few "Pump-gun" only Sporting Clay shoots for me ... cash, prizes and even another 870 Express (go figure !) I've shot several "straights" with it, at both Skeet & Trap, a few perfect rounds of 5-Stand, and once managed 7 stations ( 70+ targets) straight at Sporting Clays before the first miss. Lots of pure "triples" in the field with waterfowl, both ducks and geese, 23 doves for 25 shells and a "quad" on a single rise of Quail ... in a country where a plugged magazine is not required.
Is it perfect or the best ... hard to say, but with a few very inexpensive modifications for "fit" sure works good for me. I'd look at an autoloader too ... but more than likely a
Beretta 391 or Benelli Cordoba (just don't like the porting !) Not a fan of 3-1/2" shells, if I feel I need them, I go to Kent Impact non-tox with full choke. They will do anything that the best 3-1/2 steel will do, albeit, a bit more expensive. (But worth it ! )
Just my 2 cents worth !