My only problem with buying one is they are all small. The largest one I saw only has a 12 fluid ounce capacity ( 1.5 cups ).
I'm sure the Japanese have friends over for tea

I would like to make tea for a friend or several friends. Something with at least 16 fluid ounce capacity, the ability to make a "cup"( 8 ounces ) for at least two people would be desirable.
I'm told that iron tea pots are mostly for decoration. Is this true?
If I believe what o-cha.com says, I should a specialized pot for particular types of green tea: gyokuro, fukamushi, etc. Is that really necessary to get the FULL enjoyment out of each special type of Japanese green tea?
Is there a generalized ceramic tea pot good for several types of Japanese green tea, that can hold at least two cups ( 16 ounces ) ?