Its hard to say whether these blades provide more lift or not and the extra mass means its going to be harder to accelerate (throttle up) and as I've seen on an even heavier copy of these blades, can lead to instability where the heli can slide out of control. HOWEVER the flexible blades contribute to its great stability and when used with the newest 180 motors you get lots of performance headroom (a rapidly descending heli can quickly recover with a squirt of throttle up) These blades are very durable, flexible and well suited to the challenges of outdoor flight. It allows my Lama V4 to fly in conditions where normally it has no business flying.