I've been going to Yama for 7 years now and I have yet to find a better cut of fish. I hold Yama as the benchmark for sushi restaurants and haven't found a competitor worthy of their rank in Northern VA or DC. There are much trendier and hipper places out there, but for a simple salmon or tuna roll done to perfection, it's worth the trip to the burbs. Friday and Saturday nights are a bit crowded and a wait is usually in the cards. Go early on weekends, or try mid-week. Also consider carry out. If you do try this place, listen to the greeting the sushi chefs give (in unison) as you enter the front door. I still have no clue what they say, but I hole my breath each time I go in anticipation. They also send you off with a "Thank you, good night" as you leave. Simple appreciation goes a long way. Modest, clean, consistent and friendly place.