I live in Flatbush I have plenty of good Shabbos greetings. To some above posters have you ever tried being the one to initiate the good shabbos greeting?It definitely works both ways.
To Postal: unless you are very chasidish flatbush is much more appropriate as there are all types and all types of shules and rabbonim.Within many Shules there different types as well.
Bottom line if you are not chasidish you will not find yourself comfortable in Boro park. Additionally a wider range of schools and better transportation are in flatbush.