I surf the original Carbon reactor and really like it. The NEW Air Core reactor is lighter and has the same benefits as its predecessor . If you are like me and go between hybrid fishes (twin /Quad) to a short board thruster in better waves, The reactor is an easier transition. fatter base with less rack allows you to generate speed in tight spots with loser tail. very similar to how you generate speed on a fishier board. I can count on quality and predictability with FCS fins, leashes and traction. last thing you want is to paddle out on a good day and your gear does'nt work the way you expect it to..
Good job FCS and thank you for keeping me in the water