You are welcome. The article you mentioned has been online for some time now and is also a good reading.
Let's keep adding up info in here to build up a decent database on Yixing clay.
More:
3. Chinese teas and matching Yixing clays
3.4 Oolong Tea
Light oolongs. From what I have read in various sources, and bearing in mind my short experience,
Gaoshan Oolongs (Taiwan High Mountain) are best brewed in zhuni pots due to their low porosity (it's a hard and dense clay with a rock-like quality) as opposed to more porous clays like
di cao qing or
duan ni, which would tone down the complexity and broad range of flavours these teas are renowned for.
On the other hand,
Tie Guan Yin oolong is a bit more permissive tea from this standpoint. The general advice given is that low-profile pots bring the best out of it.
What kind of clay should I use? That is entirely up to you, try to rely on your own senses and a bit of experimentation, although you can't go wrong with zhu ni. Personally, for this particular oolong, I am using a dedicated low-profile
high-fired duan ni which does a great job:
