Dude! You could be my neighbor
Which would also make you within a mile of George The Curmudgeon and Michael Barber. You know, where all the cool kids are.
Seriously though, Reston/Herndon is better than Sterling for the most part, but you pay for the privilege of living in the "cooler" area. George pulls down our average, but there are PLENTY of younger 20-30 somethings here. You could also check out Ashburn, it's totally exploding with new development in the last few years
Alexandria is a nice place to live (well, some areas at least), but you'll want to shoot yourself in the face every day sitting on the Beltway. No, really. And if you're smart you'll avoid living ANYWHERE that you have to take 66 as your only option to get somewhere. Gotten to the point where any time of any day is a total crap shoot whether or not all lanes will be stopped for absolutely no reason at all. Really is amazing....