I know it's frequently asking question. But I have a different problem related this.
In my store customer will pay different price by color and size.
X product: Blue, S: $500
M product: Blue, L: $1500
Y product: Yellow, S: $550
Z product: Green, L: $800
T product: Green, XXL: $1800
Which product type I need to use? Grouped or configurable?