I love almost everything about these filters. I have two mediums, and they fit perfectly into all of my cups, mostly 8oz, some 12. There’s lots of room inside for leaves to expand fully, and the superfine mesh is wonderful – only the very finest dust escapes. You will never find stray rooibos needles or fannings in your cup.
There are two things about these baskets that make me unable to rate them 100.
I find them aesthetically pretty blah. They’re very functional but not very beautiful.
And, the plastic frame traps smells more than all metal brew baskets. I find that with flavoured teas, it can be very difficult to get the fragrance out enough for it to not taint my next cup of tea, even with soap, bleach and soaking in hot water. The smell does fade fairly quickly if the basket dries completely, but it’s a pain.
Still, these are awesome brewing baskets and I haven’t found anything better.