Yup, on the Eden "exterior," the top choices are Huong Viet (remarkably consistent after all these years) and the new Tay Do. There are some gems in the "interior," as well -- not only for sit-down meals (e.g., Nha Trang, for rolls of ground pork wrapped in rice paper, minced crab soup, and roast quail), but also for, e.g., banh mi (e.g., Nhu Lan, at 6763 Wilson Blvd., #14). There's a lot of turnover inside, though, and not a lot of reliable reports on the web in English, so the interior can be hit-or-miss.