Well I've been using my 770 nonstop the past week. Even on sundays I'll go out and use it on my own property. The only other powerful blower I have used was a redmax ebz7150 and even that doesn't compare to the 770. I still get hot even though its cool out and the AC on my back feels awesome. I'm going to be loving that come august.
Did a solo cleanup friday that took 2 hours. I couldn't imagine having used my pb403, the 770 literally cut my time in half. I cranked up the 403 ab 30 minutes ago to let it run and it feels like a little toy. It will still be great for employee use for the standard lawn cuts. Only I will be using the 770 though