I know many of you have used the technique of using both backpack and handheld blowers at the same time, but yesterday was my first. My grandson and I were doing the fall leaf cleanup for a fairly large commercial account. I had been using a Shin 8510 almost all day to blow leaves from the grass areas--then started the 100 car parking lot. I decided to give it a try with the Echo handheld also. The results was almost unbelievable. The added volume was good, but the direction control was great. I know Alan0354 often talks about using the combo--wow did it work great yesterday. Thanks for the tips presented on this forum!