In my experience, the Hi-Fly propellers I bought for my Fly 100 Evo and, later on, for my Polini Thor 100, were better than the Helix I originally had for both: they were lighter, felt like delivering slightly more thrust and fuel consumption also was slightly lighter.
Some friends fly with e-props NG and they are even better as far as I can tell... But I guess they also are a lot more expensive...