Here a small review about my impression on the first couple of jumps on a brand new JFX (unfortunately not my own). The size of the canopy was 87 with a wingload between 2.1 and 2.2.
Openings: All openings were smooth and completely on heading without any inputs on back risers. The openings are faster compared to a Velocity or Katana, but still soft. An the best, it’s not necessary to do something special by packing the parachute