I purchased this brush after hearing the hype about this product. I tried to use it for about a month to allow myself a learning curve and I'm not "thrilled" with this brush. It's an okay brush, but nothing worth spending that much money on.
I primarily used this for liquid foundation (Revlon Colorstay & MUFE HD) and I found the application very streaky. The bristles clump together and it just is too messy and takes too much time. I personally prefer stippling brushes that are dense like the MAC 130 or for a cheaper alternative the Real Techniques Stippling Brush.
If you are trying to decide for brushes, I'd definitely recommend those two before purchasing this 187 because they get the job done without streaks.
However, this is a great brush for applying very pigmented blushes to your cheeks.