We lived in downtown Silver Spring for the last twelve years. Terrific area with great access to everything, including good access to most of the area training routes. And with all of the development in the area, it's safe and there are actually things to do. (That wasn't really the case when we first moved there.)
But we just moved to the Rockville burbs last month. And frankly, I haven't quite cracked the nut on this one yet, riding-wise. I've seen three kitted riders in the area so far, including myself.