I usually use bicubic sampling. Its not the strongest but it tends to do well when the resizing forces pixels to blend. It sometimes causes banding, but only when severely resized. In such a case I would use linear sampling which works well for 16 bit color images like icons, etc. Unfortunately PS doesnt let you reapply textures after resizing. Keep in mind, this is just a 2D mockup of what I wanted to make in 3D. You cant see it, but in the PSD file the bottom layer is a screenshot of the concept render. Everything else was outlined and filled by hand on top. Layer blending and filters create the illusion of depth, which should be very noticable. If I get around to it, the 3D model will look much better because it will be REAL 3D, not faux 2.5D.