I have tried and love Tatcha. I have personally used Perricone for a number of years and it is best for my older skin. However, I always say that if there comes a time when I cannot afford Perricone, I will go to Tatcha.
I purchased their trail size four-pack a few years back and really liked the products. I think it is a very good line of skin care.
Side note......when I was in Japan a couple of years ago, every skin care place I went to, there was nothing called Tatcha. I thought it would be well known because of how the owner talked with geishas when formulating the product. Unless she carries it under another name in Japan, I couldn't find it. Was curious on how the pricing might be in Japan, where so many things are expensive.