Used the brush blade two weekends ago, and let me tell you that thing will cut through anything! It cuts like butter!! Really worth the invest, which was only like 45 dollars in total.
Here are some pictures of the job. Before and afters. At one point i had to use my truck along the road due to the bushes being to high and i couldn't reach them. Worked very well. Also loved the hs81 that was really worth the investment, cant wait to get more use out of it