My favorite Korean restaurant in the Tristate area is the one in the brand new shopping mall opposite H Mart in Great Neck (495 Great Neck Rd). It's a shiny commercial food court (the sole vendor therein, though they're split into a Korean/Chinese counter and a Korean counter....same people, same kitchen).
I've eaten there a dozen times, and everything I've had there has been ace. The Hey-mul Pajun, unlike those in Manhattan, are prepared freshly to order and good enough to inspire tears.
Understand that this is fairly frosty, correct Korean cooking. Not a personal vision or personal touch. Just classic renditions of classic recipes done (really) right with good ingredients. And there's (shopping mall food court-type) seating, but no table service. Panchan is merely servicable (though one time I got potatoes!!!).
Prices are great. And best of all, you can shop in H Mart afterwards.