Lets say you have a 12 gauge shotgun and you decide to buy a second one in a smaller gauge. Would that second one be a 20 or 28 gauge? I'd say 28. Twenties have loads that approach 12 gauge. Twelves can be downloaded to 20 gauge level. It seems like the 28 would offer something a bit different. I guess a 410 could be another choice. But it takes a real expert to be good with one. If you were limited to two scatterguns, one being a 12 gauge, what would the second one be?