Having owned vintage hammerless shotguns I am inclined to go that route with a hammer gun. My bad? Maybe but I really like the old guns and the history they represent.
About six years ago I bought a 16 gauge Joseph Lang non-rebounding hammer gun built in 1866 and re-barreled in Damascus by James Woodward about 1872 or a little earlier. I've fired over 5,000 low pressure 7/8 ounce nitro loads through this gun and will be shooting it again this weekend. It is fun to shoot clays with and it is an ideal gun for preserve quail over pointers - like most non-rebounding guns it is easily cocked by an easy sweep of my right thumb as I mount the gun.
I agree with a previous poster that going to a vintage shoot that has exhibitors will give you a lot of guns to look at and help you make your choice.