Gemfan Hurricane 51433-3 Tri-prop (2CW-2CCW)

Although Gemfan markets these as Freestyle props, I've found myself constantly reminding them that there are race setups that benefit from this 51433 prop layout. In high KV (e.g. 2750KV 4S, 1950KV 6S) the lower pitch on these result in a really locked in feel with huge amounts of precision and control across the RPM band, and through unloaded straight line flying into tight turns. The cornering precision I get with these on my 300g dry weight quads has me willing to forgo a lot of my usual lightweight setups on tight tracks, because the accuracy these offer in tight hairpins, split-S, and corkscrews with these props have pushed me to become a better pilot - predictability is everything, and on a good high KV setup these props deliver.
A lot of the same tendencies as the Gemfan Hurricane line are here - very linear throttle response, light weight for tunability, great (but not the best) durability, and ability to maintain balance even after re-bending extremely well.
On more conventional mid-KV setups, I feel like the 51466 from this same line carries a real edge for feel, and the improved efficiency of those setups work best. In true lower KV, or for higher speed obviously the 51499 is the ultimate answer, but even running those same setups these 51433 versions turn it into a solid indoor/proximity variant of the same quad, with a very locked in feel, just no top end speed.
Embarrassingly, the biggest reason these are my favorite among the Hurricane line of props is that the come in Purple... but my purple race setups happen to be running 2650KV/5S or 2150KV 6S, so these work brilliantly.
I can't comment as much on freestyle feel, but for a lot of stereotypical setups (1950KV 2207.5 on 6S, or 2306.5 2722kV on 4S for examples) these are going to work well to make aggressive KV combinations work extremely well and maintain efficiency, although they'll be similarly underwhelming on lower KV setups (1700KV 6S or 2400KV 4S) if you need lots of punch, but again overall efficiency when I tried those was brilliant with long flight times, but it felt like I left too much throttle limit on despite having none active.