1.Dough with smaller water amount is harder to knead and require longer resting time. But the noodles will be easier to handle and they will be more uniform in thickness. The final noodles are much chewer and better for dry mixing and stir fries.
2.Dough with large water amount is easier to knead, require shorting resting time and easier to pull. However, you need to be very careful and slow down your speed to get uniformly thick noodles. The final noodles are much softer and better for noodle soups.