THE YS 140 I REFER TO IS THE DZ WHICH IS MORE POWERFUL THAN THE 140 L. FOR INSTANCE MY DZ IS STILL FAIRLY NEW & GETTING STRONGER. I TACHED IT YESTERDAY AND IT WAS TURNING AN APC 18X8 WIDE BLADE 8900RPM. YOU ALSO HAVE TO CONSIDER THAT THE DZ IS MUCH LIGHTER THAN THE MOKI AND HAS MORE USABLE POWER 7 TORQUE IN THE MIDRANGE WHERE MOST OF US NEED IT. LIKE I SAID BEFORE I HAVE OWNED THE MOKI 1.8 AND IT IS OK, BUT THE YS DZ BEATS IT HANDS DOWN IN HANDLING & USABLE POWER.