My humble Yixing pots (with US$0.25 for size reference):
I use the pot above only for high quality Dan Chong
For Sheng (raw) Pu-erh only (about 4-5 mini gongfu cups)
For lightly fermented oolong (about 4 mini gongfu cups)
For heavily fermented dark oolong (4 mini gongfu cups)
To make wishes with the genie inside. I haven't decided what this pot is for. I just got it a few weeks ago in Guangzhou for RMB 100. A decent quality with very good pour ("zhu suei") for the price. Still unseasoned as of to date.
My favorite one that is rarely used. A big one, for some serious pu-erh drinking with friends and family.