I just saw this thread. Glad to see others love their Prismacolor Premier colored pencils, too!
I am using Memento Tuxedo Black ink for EVERYTHING now. I love it and I can stamp images ahead of time and not worry about what I can use to color the images. It does not bleed or smear with ANYTHING! I use Gamsol, watercolor pencils, and even copics with Memento and I have NO problems.
For white card stock to stamp images on, I now use Neenah Classic Crest Avalanche White 80lb. cover. It's great and I can use that for everything, too.