The media? I guess if you're into getting all kinds of attention and stuff you'd want to go NY or LA (well LA has a soft media).
I remember Nomar, when he went to LA how drastic the difference and how he can finally relax and just play.
Also, I remember hearing that D'Antoni, use to tell reporters to write good stories about Marion, and tell them to bring his name up to boost his confidence, he could get eaten alive here in Boston.
Also the night life is a bunch of college kids puking. If Boston has the kind of clubs NBA stars want to go to, then I must be going to the wrong places.