Written by DCist contributor Andrew Chriss Falls Church offers a diverse array of ethnic cuisine, providing a homespun, lower cost alternative to higher-priced and better-decorated offerings in the District. That being said, it’s been a while since the days when I frequented the BBQ, kosher deli, and pho establishments in Loehmann’s Plaza. On this night, the destination was Eden Center, Falls Church’s Vietnamese epicenter on Wilson Boulevard in Seven Corners. But where to eat? The…