I'd have to say Wongs is terribly overpriced for what you get, if you're looking for a good Chinese try Hin Keng which is above the Clontarf Court Hotel, much nicer than Wongs, cheaper and staff are far more polite and dont rush you.
Otherwise in Clontarf i'd recommend Kinara which is stunning Pakistani/indian food.
Restaurant 1014 which is a new restaurant close to the Bull-Wall and all its profits go to the CARE Chairty, quality food, menu is 'french bistro' (if that makes sense)
If you go further out to Howth Aqua or Ivans both on the 1st pier are top quality.
If it was my call i'd always go for Kinara