I'm having a little trouble with the ones that are copy protected
Depends on the tech you are using. Going generational with VHS will degrade quality, and the Macrovision will usually make the duped tape no better than what you are already getting. If you can spend about $100, I've had good results with the Dazzle video interface. I don't like the DVD authoring tools that come with the PC version, so I use the Dazzle to capture the video then create the DVD in Roxio or copy it to the Mac; the Dazzle Video for Mac is bare bones software that makes capture dead-easy, and I like Apple's iDVD for authoring most things - simple, and fast, and surprisingly good results.