I use the miller unit on a standard Sullivan starter with 24 volts to start my G45 with electronic ignition. I usually have to crank it about 10 times with the choke on if its cold until I get it to pop. Its just easier with the starter.
I also have a RCS44B2 that can get nasty at times. The starter saves my fingers.
I start my ZDZ 80 by hand since my starter will not turn it over. The batteries are 5 years old - I need new ones.