We've been going to Mencius for a long time. We love their food, and they have very generous portions. We try to go there for carryout or dine-in on weekdays before 6, because they have a very nice early-bird special which makes their prices very reasonable.
They are a great place for lunch also.
Always friendly staff, authentic chinese food with great flavor. Soups, eggrolls and cuisine is excellent, and they are happy to customize an order.
One note...even though they are a bit fancy (formal) and it's a quiet place, they welcome families and kids, and we've never had an issue or felt out of place (with a 5-yr old and a baby).