To be honest, I have one obiami (steel mesh) Tokoname teapot that I use often, but I cannot for the life of me ever get out all the little particles stuck in the infuser. It was the first kyusu I ever bought, so I blame ignorance for that choice.
I think an easily removable filter is a good idea, but at the same time, I'm not a big fan of plastic in teaware. It also bothers me that they're already selling replacement filters... I don't like it when I buy something with the knowledge that I may need a replacement part in the future.
So, I think I'll just stick to sasame and ball-shaped filters. I've been having no issue with keeping them clean.
Thoughts?