There is no tool shape or grind that will make you a better woodturner. All there is, is the different shapes or grinds that each person prefers and may help in a certain situation. Ask 30 woodturners whats better and you get 30 different answers. For me if you handed me a V or a parabolic shape I would not know the difference, but hand me a U I'll know the difference because a U to me is more aggressive and I have less control. Pros have their own line of tools and they push them as that is to be expected. In reality they could use a broad axe and turn better than you because they have thousands and thousands of pieces under their belts and they use a certain shape or grind because they like it and they have a tool with their name on it. The only thing that I know of to make everybody better is practice, practice, practice. And if you are just starting out joining a club can make a huge difference.