As Chris says, it's a matter of personal choice. It depends on a variety of factors, including where you work and your commute...how much space you need...whether you like newer (which the Centreville ones probably are) or somewhat older (which many of the Springfield ones probably are), and so on. And it depends on the amenities you like around you. And it depends where in Springfield--that's one of those areas that stretches for miles.
Appreciation-wise, both should do fine in the long term. Springfield has a great location, right at the Beltway, close to 95/495/395. BRAC should help, too. Meanwhile, Centreville used to be out in the boondocks, but now--especially with the development in Tyson's and Reston, as well as along Rt. 28--is nicely located. And it's right off of 66.
I'm both a Realtor and real estate investor; let me know if I can help you further.