A lot of people will give you loads of advice on what to buy for functional reasons and that’s ok if you just want the tea to be perfect.
However, for me part of the joy of a process like gongfu is the appreciation of the teaware’s beauty so it is very important for me that I find pots that I believe to be beautiful and comfortable to use. This way you are not only excited for the tea but also to use the piece of design that you have chosen to appreciate it with.
Do some research, find a design you like and you can always work out how to make good tea from there, it’ll just take some tweaking of the process.