Here are the links to the products you asked about.
Neenah Solar White Crest
This comes in 110lb and 80lb. The 110lb I have only been able to get from Amazon and it comes in a ream so it is alot of paper. It will last you for a long time. I mainly use it for card bases, but you can also use it for layering. Both 110lb and 80lb is great for copic coloring or ink blending.
This the 110lb ream.