...I still have a Roland G-70, whose keybed is also highly praised, but I consider the PA3X-76 even better...
I feel SD-1 is better than G-70, so if Korg is better than G-70 as well, it most be great to play at.
Not easy to find any near by to try out, same shit happens here as many places, shops are too far away and trades being done via internet.