Oh Goody, we get to talk shotguns.....
Rem 870- Good shotguns, very reliable although some of the expresses have a few issues coming out of the factory. This are normally easily fixed. Great shotguns if you shoot them well and are ok with a pump.
Ithaca 37- another great shotgun. every reliable. Some say they are hard to work on but I could tear one down and put it back together with my eyes closed. Again, a great gun if you shoot them well.
Mossburg 500/835. Decent field guns if you like the way they handle. Don't bet your life on their reliability.
Benelli Nova: Good gun if you can get over the forarm rattle.
Browning BPS: I not a big fan but some like them.
Winchester 1300: Decent field gun. Questionable life span when subjected to high volume shooting.
Mossburg 935: Mossburg and automatic shotgun should never be used in the same sentence.
Reminton 1100: Reliable if cleaned regular. Classic but outdated design.
Remington 11/87: Some swear by them, others swear at them. Especially true of the 3.5 inch version.
Browning Gold: Stuck somewhere in the middle as far as reliability and preformance.
Winchester SX2: Bout the same as the gold. I had a 3.5 inch version that wouldn't cycle 1 1/8 oz loads reliably. It went down the road.
Beretta 390/391/Extrema: Pretty much concidered the most reliable of the gas guns and will cycle the widest range of shells. Of course this comes with a higher price tag. The popularity of Berettas among target shooter is a huge testiment to their longivity.
Benelli: Great guns if they come from the factory working right, which the vast majority do. If they don't come from the factory working its normally one heck of a headache. No gas gun can compete with an inertia driven gun in terms of number of rounds that can be fired between cleanings.
Now, the above was written in terms of a shotgun that gets shot ALOT. Pretty much any gun will work for the guy that shoots 200 rounds a year, provided he stays within the design working parameters of the gun in question. (I.E. if you try to shoot reduced recoil 7/8 once loads through a 3.5 inch 11/87 it isn't going to work out so well for you.)
That all being said, the 2 most important factor in shotguning are: 1 fit 2. How the gun "feels" to you (usually related to fit) Yes its important even if your just going to hunt coyotes with .
As far was what gun will partern the best its a crapshoot.