Robert, I can't give all stats from one to the other but my $100 sullivan 12 or 24 volt will start my .67 on 12 volts and my $40 torkmaster will not
After a few years working to get good, light and powerfull starters:
I come with cordless Starter for belt start nitro and gas boat.
This is new version of wireless Starter with HONDA Starter motor.This motor better than ATV.
Basic configuration: 12V ATV Starter motor, handle, solenoid wired and battery monitor. $145.00.
This cost less than DYNATRON at 18 Volt starter, but more powerful.
You can use 12 V battery wired to Starter or get LIPO battery attached to back plate of starter.
Regular price with 3S LIPO battery and overnight charger - $195.00 ( shipped within USA)
A lot of boaters using this starter to start any size of nitro and gas motors. Chjeck please posts about cordless starter on IW and on Jim's R-C boat dock. Boris