The Silver Bullet is a newer and improved model of the Cougar. I would caution you in buying a Black Cat Cougar only because you have to be sure you are purchasing a machine from an authorized dealer, and none of our authorized dealers have NEW Cougar machines. So if you are purchasing a used machine, you would need to be certain that the machine originally came from someone authorized to sell. The details of the trademark are well detailed on the internet and you can click on the "That's Scrap" tab above to get additional information.
All of the details on purchasing a used machine are spelled out under the Items for Sale Category here
viewtopic.php?f=32&t=5580The Silver Bullet comes with SCAL 4 - the newest version of the software. If you purchase a used machine, you would need to purchase additional software - they do not come with software.
I hope this helps address your primary question.