I prefer fan or hybrid knots because I like more of the bristles against my face making me feel like I'm getting the most out of the knot. The only bulb knot I tried was a silvertip from The Golden Nib. I liked it a bit more when it broke in due to the fact that it had a lot of splay due to it being set higher in the handle. I would imagine a bulb with more backbone would have fewer hairs touching my face.