I voted 'other' because I have several and I like them all for their particular role. (Very Taoist thing to say, I suppose). If the vessel functions well for what it was designed to do then it brings joy to my tea experience. I might have a more favorite within a particular category (a yixing whose design is more artistically pleasing or a gaiwan which has a design a prefer) - but as to their function, if they function well for each particular type of brewing situation then I love it (because it makes me tea!).
Some of this may come from the fact that I (unlike so many others) do not have a favorite type of tea - ergo, it is unlikely I would favor a vessel for a particular type of tea.
IN MY CUP: this morning (which has started, literally, with a flat tire that must be dealt with) I am having some Harney and Sons Holiday Tea (acquired from the passbox) which was prepared in my PersonliTEA.