The reviews indicate a mix of positive and negative experiences at Penang food stalls in Singapore. The standout dishes are authentic Penang-style Char Kway Teow with notable wok hei, generous ingredients, and genuine flavors, often worth the wait. However, complaints include inconsistent food quality, long queues, slow service, and some dishes lacking the authentic taste or proper ingredients, such as cockles and spices. Prices are generally reasonable, but some find them steep considering portion sizes. Overall, the stalls are appreciated for their nostalgic, flavorful dishes, though experiences vary.