Both are very good. First, go with what you are in the mood for eating.
But if I were using a TS credit, I would choose Puck Express. They really have more of a meal variety, other than delicious sandwiches like EoS.
It will depend on if you want more than a sandwich and a few extras, over a complete, hot, also delicious meal.
And maybe it has just been luck on our part, but Puck Express has not been crowded when I have eaten there. So it felt less hectic and noisy.