I think i have my heart set on a used Dan Wesson model 15 or 15-2. My first question is how interchangable are the barrels? I see barrels w/ VH and V and am not sure if they can all be used on a model 15 or 15-2. What is the difference between the model 15 and 15-2? I have learned that I would only want to purchase a Dan Wesson made in the Monson plant but what if I would have problems w/ it...can CZ fix an old Dan Wesson or could I run into trouble finding parts and service? I would love to buy a pistol pac but the price looks to be a little high for one of those, so I will be looking for a 6" or 4" first and buy the other barrels I want as I go. Can I buy the barrels from CZ? My other option is a Ruger gp100 but I really like the idea of the interchangable barrels on the Dan Wesson. Also how does the Dan Wesson shoot compared to a gp100 and the gold standard 686?