This mug is without peer (in my limited experience) for making a cupa. The stainless steel basket is a joy, small enough holes not to let the tea leaves and material get through but porous enough to give an excellent steep. The basket also fits snuggly into the top so you have a ready place to put it when you are done steeping. The cup itself is substantial without being too heavy and ridiculously easy to clean. Everything cleans so well that I can safely use very different types of tea in it and not worry about cross contamination. This is literally one of the best purchases I have made in years. If you make two cups of tea at a time this is just an awesome choice.
I would buy the cup in white. My original cup is a gorgeous aquamarine but Den from Den’s Teas pointed out that any color other than white won’t really show the tea’s color properly. I just made some Houji-Kukicha and instead of looking like rich caramel as it does in my white cup it looks like mud in the aquamarine cup. I clean my white cup daily and haven’t had any staining issues.