Nice collection Dale. You need to add a couple of the old calibers to your collection for authenticity, like the 44-40 and 32-30, for example.
I love them too, but I only have a Ruger Vaquero (in .357 magnum, not a cowboy caliber!) and a Marlin 30-30 (again, a modern caliber). I want to ad another lever gun some time this upcoming year. I'm thinking about either a 45-70 or .44 magnum, probably a Marlin or a Rossi.