Seeking Manhattan showroom with Yamaha electronic grands

We’re ready to buy a high-end Yamaha piano for our city apartment. Been thinking about the DGX-500 and/or comparable models.

(must have 88 keys, good texture, grand piano sound, damper pedal)

(must have headphone jack, sound out, and nice built-in speakers)

(would like sostenuto and una corda pedals but can live without)

(could care less about extra voices, drum beats, or built-in songs)
Can anyone recommend a good showroom in Manhattan that would have a wide range of models of this general caliber? We’ve tried the 500 itself but none of the comparable models.

J & R sells it on their website, so they may have it in person at their mega-store.