What we use is an ECHO 260i backpack blower with the starting pull on the front so that we don't have to take it on and off everytime to start it. It has been very reliable. Here is a picture and all the information about it:
PB-260I
Easy starts are now routine without unmounting the unit for both commercial landscapers and homeowners. The Echo ii-start™ System reduces engine starting effort by 75 percent.
EchoÂ’s powerful commercial-grade 25.4 cc
dual-ring piston engine for outstanding performance.
65 dB(A) at 50 ft per ANSI B175.2002 without sacrificing power.
Fully adjustable left hip-mounted throttle assembly with cruise control.
Padded backrest and easy-to-adjust shoulder straps for greater operator comfort.
Pro-Fire Electronic Ignition Standard