Thank you. I'm not expecting miracles, but if this serum causes even one more crop of front/head hairs I'll be grateful! I haven't tried Smith yet - I was looking at this one just now. This one looks like it might be too wide - I love that they show you this angle in the preview images! The MAC 208, the Sigma angled liner and the Louise Young have all been too wide, with the LY one being the thinnest of the bunch. (It's pretty good at feathering in some grey powder, though!)
For comparison to the Smith one - the miniature brush I have is this!