I'm using the Tributaries DCV C component video cables, which use silver plated copper conductors, on my Sony 7700 player. I notice a very negligable difference in the picture quality. My 7700 is also not progressive scan. You may wish to try them. Tributaries has established a reputation for their video cables. You can check them out at www.tributariescable.com. Be sure to check out the "product construction" link for specifics.
Hope this helps.
Dom
Hope this helps.
Dom