I think this is a good video. This really shows how plane angle is a preference. All good strokes are 3 diminsional, it's just a matter of when you do each diminsion that makes your plane angle. Do you go more in and back before you go up (Tomasello) or do you do all more at the same time? It isn't a matter of right or wrong. Both work. It is a matter of what you feel comfortable doing.