DUAL PLANE & NOS

If you have access, Engine Masters did a test of this. I don't recall how big a shot they tested, or what the exact results were, but if I remember right, they decided it was a myth.
Still, with a hundred shot, I wouldn't worry about the two plane. With a plate 300 shot, I'd certainly use a single plane.
My system can shoot up to 250, and I'm using a single plane Team G.
Edit: I think it was EM, 3rd season, episode 9.
You can Google nitrous two plane and get a bunch of info.