I often return to painting on paper, either with an acrylic ground, or a Sal-Zar ground, or Oil Gesso ground. For paper, I exclusively use Stonehenge™. I have a personal preference for this paper: acid free. For further discussion on conservation of works on paper see: Preserving Works on Paper (Preservation, Library of Congress)
Paper has properties that enable an artist to create images that have a distinct character quite different from those produced on wood, or canvas. The public, unfortunately has a low regard for works on paper, and often refuse to recognize that, if used correctly, paper is better than canvas: Not linen canvas, but certainly cotton canvas.
The images in tis series (2005) are 30 x 50 inches, Stonehenge paper.