I liked this piano more than the Roland FP10 and Yamaha's P125.
I think it looks better, the piano sounds better and the action is much better. Korg D1 use the RH3 keybed, which is Korg's top keybed. I often just press these keys without playing, just because they are so satisfying.
Korg D1 looks stylish, sleek and the materials are solid and scream quality. I really like this piano. Ofcourse speakers would be nice, but i rather want better quality, better looks and better keys.