I have 6
: 2 ceramic (too big for daily use), 1 glass (also too big), and 3 tetsubins.
Of all that I regularly use 2 small tetsubins. I will very likely replace one or both. I bought too many teapots before I found this forum and learned how to brew tea, and before I figured out what I like. I am planning to get one kyusu for my Japanese teas, and probably one yixing for blacks, although my tetsubin works really well with blacks, so I am not sure. I have not started trying oolongs seriously yet, but if I like them, I may get a dedicated yixing for them too.
I had a nice cup of Assam Harmony in the morning, and now am drinking the last of my Fukamidori. I am excited to finish it because now I can open one of the new sencha's from Den.