Vezon and Kardas definitely, it's the only set that I've seen in stores I didn't buy, and when I had the money they were never to be seen again. Other than that the sets I don't own are mainly from 2001-2003, before I started collecting.
Awesome! I've always been a fan of he Bohrok, and your recreation astounds me! Would you mind if I shared this on a Facebook page and directed them here so that others can see this incredible creation?