The Sigma F55 is closer to the MAC 188 than the 130. Sigma F80 is more like the 130, except the F80's bristles are all synthetic, and it's a bigger brush. The Real Techniques Stippling Brush is about the same size as the F80, but I think it's less dense. MAC 217 ~ Sigma E25. MAC 219 ~ Sigma E30. Hakuhodo also have some dupes in their 200 series, I believe.