Chikuhodo Z-5 Eyeshadow Brush is a brush that retails for $56.00.
Z-5 Eyeshadow Brush ($56.00) is a large, dome-shaped brush. The brush is made out of gray squirrel hairs, and the brush head is 16mm in length, 19mm in width, and 6mm in thickness. It had a total length of just over 5 inches or 13 centimeters with a lightly pinched ferrule. I think the larger size will make it great for some, but then a shape others would rarely reach for; I fall into the latter camp. If you were applying a single color all-over the lid, it absolutely works well for that. It picks up color well and applies a lot of color from the get-go, and it's particularly nice for those sub-par eyeshadows in one's stash, as you don't have to pack on the eyeshadow for quite as long. It also seems to diffuse the color along the edges where it's been placed, as if you blended it, but all you did was pat it on. The bristles aren't all the same length, as they shorten as you move to the sides of the brush, it also works well to blend out edges and fade colors upwards towards the brow bone. I also liked it for patting on setting powder underneath the eyes (to set concealer).
Inglot #27P ($21.00) is the most similar in shape, size, and density, but it is wider and has more rounded edges. shu uemura #11 ($140.00) is slightly narrower and significantly longer, but it has a somewhat similar density (not quite as dense throughout), and because it is longer, it has more give. OCC #007 Large Shader Brush ($22.00) is smaller, more tapered along the edge, and half as thick. MAC 252 ($32.00) is similar in shape along the edge and at a glance, but it is significantly less thick and dense. Tom Ford #11 ($55.00) is a little more flared at the edge with a more rounded dome shape, and it is also less thick and less dense.