RE: .45ACP???
If you're set on the Ruger or Taurus, I'd go with the Ruger, because its a RUGER. But, if you're willing to spend $500, there are some used Kimbers that can be bought in that price range. The black "Ultra Carry" and base "Custom's", around here, can be picked up in the $500 range. These are "base" models, but they ARE Kimbers and shoot very well. Just a thought.