Generally, when frum people talk about Queens, they mean KGH, which is the largest frum community in Queens. If you need public transportation, KGH isn’t so great. You have to take a bus to the subway. Kew Gardens, on the other hand, is walking distance to the E, F, J, and Z trains. From FR, you can take the A train, but it’s a long trip to most places (hence the “Far” in “Far Rockaway”).
Double Standard (3 years ago) said KG is cheap. By most people’s standards, it isn’t.