I have tried all the papers including Neenah and by far, the clear winner is Beckett Expression Iceburg. It's the general market equivalent of Stampin' Up!. It doesn't pill, takes a lot of color and the colors stay true and vibrant.
As for ink, I like using Staz On jet black. I have found that I need to let it sit for a couple minutes after stamping it to make sure the color is good and dry before coloring over the top of it though.