I don't get people who make blanket statement like that. They make great deer and turkey guns (with a polychoke) especially with a krebs sight for the longer sight radius.
If you are set on doing it the longest barrels is obviously the best for hunting(I think that will be about 20"). I don't think any have interchangeable chokes, which is pretty important for a shotgun you want to hunt upland, hog and deer.
It's better not to talk about things that maybe you are not so up to date on. They have chokes available and are threaded for chokes. They have a 19" and 24" model and like I said above they are great for "aiming" type hunting but not so much for "pointing" type hunting.