Depends on who you’re playing in most cases, so let me break it down a bit
Developments in Athena’s hand are there to abuse and maintain Maelstorm stacks, so they need to do as many instances of individual shock damage as possible. On BL2-skin Development, the vertical grip, with it’s 2 extra pellets and faster fire rate, would be the best choice since it already has the best accuracy in quad barreled shotguns and can cope with the loss, and in many cases are used to shoot at very large targets) See here for details
Used by other character, I would recommend either crit boost (especially with Nisha) or the general boost. That little mag size increase may be enough to give you one extra shot without making your reload speed longer. General boost may be a bit better than Side-loader, because they already have very fast fire rate, and a damage increase here (instead of a decrease) is welcome.
Using other large Hyperion shotguns, like quads with BL1 skins, the accuracy prefix will give you the best results…but you probably shouldn’t be using them in the first place IMO, as they are ammo hogs.
On thinking, the vertical grip is king. Unless you play as Nisha, where the crit accessory gives it a run for it’s money (both are good… I wouldn’t know what to call the best here). Side loader is also a good 3rd option.
Ravagers are odd birds
Since most will be using them from pretty close range (there is nothing you can do to correct their accuracy, especially since their bullets are slow) the best thing to do is to try and get an extra shot between reloads and to minimize reload time. Side-loader (impetuous) would be my personal choice here, followed by the general boost. (I would need to see actual numbers here, cause maybe they don’t make a difference… so all of this is theoretical at this point) Trying to maximize it’s damage through a vertical grip feels like a drop in a bucket. Conversely, accessories that lower their damage (like the side loader) don’t have that big of an impact. If you find a nice ravager with a vertical grip though, keep it
Torgue shotguns have less pellets than other brands, but they pack a mean punch. So on bangsticks and pounders, the vertical grip would be my pick.
Generally speaking, triple-barreled shotguns are a bad compromise and you should avoid them.
A pounder or a ravagers are both better choices than a Hulk.
Most Torgue shotguns
Shotguns with a lot of Splash
Never on Jakobs Shotguns.
2 or more Barrels
ALL Jakobs Shotguns.
Never on Torgue Shotguns.
Big Torgue Shotguns.
when you’re not sure what to get, this is still a good pick almost every time