How's the torque sensing on it? Does it start as soon as you apply force to the cranks from stop? While riding, does it apply motor power immediately after you increase your pedal force? Do you experience any variation in motor power when you pedal at a constant cadence and force?
I don't have anything to compare it to but overall I've been quite happy with it. There's some lag sure and on a steep hill you need to put in like half a crank for the motor to kick in. I guess those aren't really designed for low rpm anyway. I notice no variation in power while pedaling