This brush is my only Chikuhodo regret. Compared to my other FO and Z series brushes, it just doesn't perform as well. From the start I was forcing myself to use it when I would've rather wiped off the Z-10 between colors. I thought the difference must be all in my head until I did a side-by-side comparison. Using the same number of swipes in the same dark eyeshadow, the swatch from the FO-6 was patchy and less pigmented than the swatch from the Z-10. It also didn't work well for patting on glittery topper shades. The brush itself is lovely, though. The bristles have a firm, almost stiff spring but are very soft, and the handle is comfortable. I found that babying it a little less than normal - encouraging it to fluff out when it dries and pressing harder when I use it - softened it up enough for it to perform better. It's getting some use now but if I had the choice again, I would buy a second Z-10 instead.