Anyone had experiences with both the Launchkey Mk4 and KORG Keystage?

I would like to have a controller for my desktop, as my Hydrasynth Explorer has 3 octaves. I also have a Launchpad Pro Mk 3, which is great in its own right. The Launchkey Mk 4 has some nice keys and overall seems to be the better keyboard. However, the Keystage has Polyphonic Aftertouch. I know there's a Native Instruments controller that has PAT too, but I don't trust that brand. I don't know a store near me that has both keyboards to try out.