Alexandria is much less expensive than georgetown. I think that with a few exceptions, voiced earlier in this string, Zagat is pretty accurate for the dc area. just add or subtract 2 or 3 or 5 points from all ratings to get your number.
in crystal city try jaleo
in alex try bistro layfaette(1/2 price wine on mon), evening star(buy wine at the tied in liquor store), vermilion, stardust(really exotic cooking).