Originally Posted by Darryl G
My experience was different. I have used my Husqvarna 580 (same mechanicals as the 8500) side-by-side with both a 770 and a BR600 and the 580 is significantly more powerful. Different units shine more in different areas, but for moving large quantities of material I don't think any backpack matches the 8500/580.
I agree with this. The 8500 will out blow all the others. I cant speak for the shindy 8520. Even my old 8000 out blows the br600. I run a br600,8500,8000 and a 770. On paper the 770 looks to blow the most but thats on paper only.