Teapots made of glass I use for many years. For me it is always a special experience to watch the play of colors when "pulling". Actually, the tea already then work on me. And those moments are often more creative than when I sit constantly under pressure. On such a contemplative object "must" be for me no metal and certainly no plastic. Tea filter made of metal for reasons of taste anyway an absurdity. (Maybe not for people who also UHT milk tastes pure.)
The tea strainer clogged if you follow the instructions for use: Only pour water in the pot, then let purely slide filled tea strainer and possibly even pour a few drops, so that the tea remains down..
Unfortunately I have not found any blown pitchers more. So I have now resorted very heavy heart on this industrial product. For the two stars less.