If you fly in a dangerous fashion, you fly in a dangerous fashion.From what I gathered. Recreational allows above 400. Just make sure you are in the clear with the apps like b4youfly or Hoover. I have like 10 apps just to make sure. But if you fly part 107, it's limited to 400. What I don't understand is what prevents people from saying they are flying commercially then switching to recreationally? Seems like a loop hole. Maybe someone knows more.
It makes no difference whether under 336 or 107, you could still face a charge of reckless endangerment.