For what it's worth here's my experience on D3 over the last 5 years. I generally ski at 36mph @ 32-off. Decent stack, but really struggle with staying connected off the second wake.
I've gone from a Helix to a Quest 45 to an ARC to an NRG. All 67" skis. Came from an HO A3.
I liked the Helix more than the HO so decided to stay in the D3 family. LOVED the Quest 45. Faster, but always felt very balanced, stable, predictable. Never should have sold it. Went to the ARC and was never comfortable on it. Lost that stable feeling. And now I love the NRG as much as the Q45. Speed, stability and let's me move around without punishing me. Seems the fastest of the bunch as well to help with my terrible issue after the second wake.