Saw this in action this weekend at the NE Heli Jam. Pretty sweet machine. Easier to track and know orientation than the Invertix, but from what I understand it is also a bit more dicey to fly. The stock roll rates are much quicker than the Invertix. Also, there is a sense that it doesn't stop and hold attitude quite like the Invertix does/did. It feels far more agile.
Design wise it uses pretty robust arms of CF tubing. The larger size and design of the canopy make it easier to track visually. I'm not sure but it looks like the props are smaller compared to the invertix which may contribute to being better on the flips and rolls to inverted (smaller prop means less spinning mass to stop and change direction). It is a screamer in person. I don't know if it is particularly quick, I didn't see a flat out run or climb done with it, but it is just a noisy quad. Which with a 3D quad I guess is a good thing.
