I pretty much have a full set of MAC brushes that I've invested SO much money into over the years, and countless other random-brand brushes. But I couldn't help myself and ordered a full set of the Sigma brushes as well as the Kabuki. SO HAPPY with the purchase. I am on the waiting list for the SS188 and SS109, too. Can't wait to get those because I love the ones I already have. My love for my MAC brushes is unbreakable, but the Sigma brushes are a close second. I've thrown my random brushes in a shoebox and stuck them under the sink in my bathroom to make room for these! I'm not a "guru" and didn't get paid to say these things lol... I paid for my brushes and don't regret a single cent of the cost!
They also wash nicely with no shedding. I've had mine almost a full month and have washed them at least 5 or 6 times. They haven't lost their softness (Is that a word? lol) and I use the brush guards when laying them to dry. They keep their shape really well!