Unfortunately, there are not a lot of reviews on BHA, but they seem to have been around for a while and I've utilized their youtube videos to get excited and get started with Chinese ink painting. I encourage anyone who reads this to leave a review if they purchase anything to help other people decide on purchases.
That being said. I LOVE THIS BRUSH SET! I've only been working with this medium and art style for about 2 months now, and previously used brushes from a chain store, and these brushes blow those out of the water! Just looking at the brushes I can see a visual difference with the brush heads. I can definitely tell a difference between the chain store brown weasel/wolf brush and the brush from this set. I can also definitely tell a difference between the white cloud brush/goat hair and the one from the chain store. So far I havent really had any brushes shed on me.
The thin line rat whisker brush seems to be really good for adding stamen to flowers. I was unable to do this with the chain store brush.