I like buffets for its no frills, pick what you want in the amount you think you need option only to repeat again and again until you've had your fill.
Is it better than Mandarin? Food-wise, yes. Service-wise, no. Why go? Because it's a safe option for family dinners with varied likes and dislikes, allergies, etc.
We were able sit quickly upon entering with a party of 10. The place has a large capacity, but it meant line-ups at each food stations which can annoying after the first turn.