In a controlled and reproducible experimental food store of 290 products, we studied the purchases of 691 participants to observe reactions to five simplified nutritional graphic labeling systems (NutriCouleurs, NutriMark, NutriRepère, NutriScore and SENS). Participants are randomly assigned to one of the five treatments where one of the systems is set up on all store products. The impact on nutritional quality is measured in terms of reduction of "FSA points". Each of the systems generates a significant improvement in the FSA indicator, the average gain of -1.54 point FSA. NutriScore is significantly more effective than the others, reducing average FSA score by -2.65 points, NutriMark is 2nd (-1.86), NutriCouleurs 3rd (-1.40), Sens 4th (-1.02), NutriRepère 5th (-0.81).       In a controlled and reproducible experimental food store of 290 products, we studied the purchases of 691 participants to observe reactions to five simplified nutritional graphic labeling systems (NutriCouleurs, NutriMark, NutriRepère, NutriScore and SENS). Participants are randomly assigned to one of the five treatments where one of the systems is set up on all store products. The impact on nutritional quality is measured in terms of reduction of "FSA points". Each of the systems generates a significant improvement in the FSA indicator, the average gain of -1.54 point FSA. NutriScore is significantly more effective than the others, reducing average FSA score by -2.65 points, NutriMark is 2nd (-1.86), NutriCouleurs 3rd (-1.40), Sens 4th (-1.02), NutriRepère 5th (-0.81).