I'm thinking of getting a used 5 hp Little Wonder blower. It is a year old and has the 5 hp honda engine on it. Asking price is $500 Canadian. My other choice is to add another Redmax 8000 blower ( I already have one) or a Shindaiwa 8510 blower. Both of the backpacks are going for $700 Canadian. Does the 5 hp little wonder significantly outperform the redmax 8000 blower? Little Wonder's literature indicates that their 5 hp units have twice the power of the backpacks. True or not?