I have both. Most often I use my wheeled blower for blowing leaves out of a gate. I'll move the leaves to the wheeled blower with my BR600 and then let the Little Wonder blow them through the gate and out into the woods. I have used the Little Wonder when the BR600 just starts rolling the leaf line over. Then I get the LW off the trailer and finish the job off. It is much more of a workout to use but the power difference isn't even close. It not the horsepower that turns the impeller, it's the torque and that old Briggs commercial engine has at least 3 or 4 times the torque of any backpack blower. It has a large steel impeller that probably weighs more than any backpack blower made. Man when that things winds up you can feel the power.
Serving Greenville, Winterville and Ayden NC