I love these Memento ink pads - the size is perfect for stamping and it gives a good clear impression.
This ink CAN be used (and works well) with Copics.
I recommend getting all of the basic neutral colors (Tuxedo Black, London Fog, and Rich Cocoa) - they are all useful in different ways.
best ink for Copics
This ink is great because it doesn't bleed or smear when using Copics (and it doesn't ruin their tip, either).