Flatbush has a strong Chasidish constituency that is integrated into the fabric of the frum neighborhood longside the Litvish presence. Boro Park has a notable Litvish constituency (even greater than the Flatbush Chasidim) completely integrated with the Chasidim.
The main difference being that while Boro Park is nearly completely frum, Flatbush has a large goyish presence. Which is, essentially, what you seem to like.
So perhaps a recommendation of moving to Little Italy or Little Manila might be more up your alley.