I don’t think brand matters unless you are trying to sell Sabrett’s outside of the Hewbrew National Packing Plant. If your cart/ trailer or store is professional looking and you are not selling water logged decomposed soup dogs, then people will buy more and then come back in the future.

Regarding potato chips, people are big on removing Trans Fats from their diets, be sure to buy chips that have no Trans Fats. Also offer bottled water and have a box of the Nestea or Crystal Light mixers available for the water.