I picked up new inks at the local Joann fabric and craft store. The black is from Studio G--2 x 3 " rectangular pads, the colors from Tsukineko--little 1 x 1.5" VersaMagic eye shaped pads. The Studio G black is a tight pad, but two others in silver and brown have an open foam pad. The VersaMagics use a thick opaque ink that goes on a bit heavy, so that I find that I can first press into a paper towel before going to the sketch pad.
Do see Gretchen's comment in this post, the inspiration for today's printing.