The century doily that everyone is talking about was also published as the Party Time Doily from Traditional Tatting Patterns edited by Rita Weiss and I made it with Tourmaline Hand Dyed Thread from Yarnplayer size 80. This is my favorite thread that she makes so far.
I have also made this doily in Altin Basak size 50 thread which turned out very well. I would highly recommend trying this pattern. It was well written and the result is fantastic.