I've added a few different models and keyboards. The tenkeypad should be fairly self-explanatory. The HHKB comes in white/grey or black, with either printed or non-printed caps. I didn't include the non-printed cap variant, it'd get too crowded. The HHKB in white/grey comes in a "silent" version, that's slightly more quiet, for $130. The Realforce 87U comes in white/grey or black, with either ergonomically weighted caps (different springs for each section of keys), all 45g or all 55g. The ergonomically weighted version comes in a silent version as well.