I have Saito 1.00 and YS63-Z. Everything said above is true except Saito being better then YS.
Saito 82 will swing bigger prop then YS, but slower.
YS will swing smaller prop but a little faster with better throttle response.
There is nothing like throttle response from YS. It is better then electric .
Once you try YS you will never look back.
Pashka22