I think I prefer natural hair brushes because it's softer. However, it could be that the synthetic brushes that I have aren't of great quality (got 1 for free and other 2 from CVS), where as most of my natural hair brushes were bought at Sephora. My fav. brush though is a eyeshadow brush from Japonesque. The brush is very soft, and the perfect size for my small lids. It was included in the Touch Up Tube Set that I got for really cheap.
Right now I'm looking to buy a good blush brush. My sister bought one from Victoria Secret (forgot the actual brand), and it's just so soft and perfect. It was a regular round brush, about 1.25/1.5 inch in width, and only .5 inch in length, and just picked up blush so effortlessly, and glided across my cheeks in the most perfect manner. My cheeks looked soooo perfect that day, with the perfect glow that is just sooo hard to achieve. I asked my sister about it, but she said she wasn't able to find any more. :(
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