I would check out these two threads:viewtopic.php?f=3&t=13483viewtopic.php?f=3&t=10870
You can also check out http://tea-obsession.blogspot.com/2008/ ... -cong.html
if you haven't already.
I think whether you prefer porcelain or stoneware would have mostly to do with the exact tea, and whether you're looking more for fragrance or for texture / thickness. A thin porcelain gaiwan is a very good choice, though, IMHO, and much cheaper than a pot. While a pot is fun in its own way, with many dancongs I prefer the taste when brewed in a bone china gaiwan.
As far as pots go, I think some sort of red clay, whether a hong ni yixing or a Chaozhou pot is probably appropriate, but more because of tradition than because it will necessarily give better brewing performance. I don't personally agree that Chaozhou pots are more
appropriate than Yixing pots, or that the fact that they come from the same area means they'll perform better, but at the least, they are a good and very appropriate choice for this style of tea.