The new Stop and Shop is real competition for our local Kosher stores. They have a much better selection on many items than GG or Seasons.
Free parking too. (True location is not good, but if you go at the right time, it can be quicker than parking by GG)
It'll just take some time to learnt the store. Kosher section is huge, but a lot of Kosher items (like Sabra products and the like) are spread throughout the store.