so, to the original question, get a hammerless, single selective trigger S/S in .16-.28 gauge.
the SKB 100 in .20 is sheer pleasure, and can be had at a reasonable price here on the EE, IMO. Some models of their .12, specifically splinter forends, are sweet as well. Beavertail, not so much.
m23 is chunky, even in .20, as I have experience. Again, Beavertail.
Great article on Outdoor LIfe recently, as I recall, about gauges, and the conclusion is that it is not the gauge, but entirely choke and shot choice. I agree.