I used my new PB-770 today for the first time. WOW! This thing is impressive--blows leaves far better than my 7 yr old Echo 650.
In September I used Shindaiwa's EB854 on pine straw at my sons house in east central Mississippi. It's an excellent blower too but I would give the edge to Echo's PB-770.
Hustler Super Z 60 - Dixie Chopper XWD3500-60 - Wright Stander X - Echo SRM 2100SB - Echo PAS-260
Echo PB-650T - Echo PB-770T - Echo HC-1500 - Shindaiwa T2500 - Shindaiwa PB270 - Shindaiwa PS344