zpb, I ran it with the 9XL on 4S lipo. Geared 14/46, it displayed plenty of power. It wasn't as torquey as with the MM, but I was running the MM on high start power and the Quark on the soft torque setting.

It is smooth and I couldn't get it to cog beyond a slight stutter every once in a while. On the other hand, I can't get it to start off at a creep either. Not like I can with the MM.

I'm going to hold any judgments until I get the Neu motor back.