I wouldn't say a lot more usable air, but rather, a difference in how it's applied. I don't know what model Stihl the other posted used, but I run them side by side (My Husky, and Stihl) and there's a definate difference between them. The Stihl is a wolf in sheeps clothing. I would be willing to bet good coin that those who don't like Stihl 600's have little time with one in real world conditions, or just assume that they are weaker because of their sound. My review will be fair and unbiased. I see no need to promote one brand over another just because I may own that one. I could have bought any blower I wanted whe I bought this last one, but I went with the Husky for several reasons that I'll cover in the review. In other words, I'm not particularly brand loyal.