Ruger Bisley stainless with 5.5 inch barrel in 45 Colt. The extra .45 ACP cylinder would be nice to have but not mandatory.

This is an example of the dual cylinder model:
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=497521567

I own one without the .45 ACP cylinder and it is a keeper.

My biggest fear is when I die my wife will sell my guns for what I told her they cost.