Funny, I just found this topic. New?? Or have I just been skimming over it for eons??
Anyway, currently, the best value for dollar in a Hammer Double is the Cimarron/TTN. The TTN moniker no longer being a player.
The shotgun plays this game right out of the box with a caviat. RUST. As soon as you get one home, take it completely apart and flush the entire action with solvent (I like breakfree) and then lube it. While it's apart, I suggest a "Slixsprings" lever spring replacement.
Then de-horn the hammers. Unless you want miss-fire problems down the road, leave the springs ALONE.
While the innerds are a little rough, very reliable guns.
Coffinmaker