Stoegers (Brazilian) are pretty solid working guns, and cheap enough that they don't have to last forever to be a good deal. They're popular among CAS competitors, and those guys beat on their guns. Stoegers (with a little 'smithing) last a long time in CAS use.
CZ shotguns are badge-engineered Huglus, not fine BRNO guns like the CZ rifles and pistols, which actually ARE a great deal, and excellent firearms regardless of price. People might have good luck with the shotguns, but they're not SO cheap that I wouldn't get something that's known to be a forever gun instead.
NIB, I think the SKB is hard to beat for the money. Treat it well, and that Greener system locks up tighter than a you-know-what
even when it's around 30 years old like my old 500. The current 505 is close to $1000 NIB, and you can still have it in 2037, if you don't actively abuse it.
Citoris are durable as all hell, though I'm not a big fan of the way the 12 Gauge handles. YMMV, since shotgun fit is personal. Regardless, the things do last forever if you treat them halfway decently.
Brownings and Berettas are great guns. No question.
I don't have personal experience with the Red Label. See my nearby thread. Ruger DOES have the best customer service anywhere, IMO. They fix a lot of things for free, and go above-and-beyond. I just don't have any scatterguns from them, just the rifles and pistols for which they're better known.
When buying a gun, new or used, do consider parts availability. If it's a rare gun, no matter how neat it is, it may end up a wallhanger if you can't get a firing pin or extractor when it breaks.