I'll add my thoughts too - I just sold my Kurzweil PC2x to get a Motif ES 8... no regrets at all BUT it was a matter of priorities. I believe in all honesty that the Kurzweil had a better native acoustic piano sound than the MoES8. But the Kurzweil hasn't got a fraction of the overall capability of the Mo. When it comes to features that include arps, MegaVoices, the integrated sampling sequencer, expandability, libraries of sounds that are available, and even some individual sounds like violins and violas and most of the synth pads the Mo is better. The PC2x also had very limited digital output options. My priority was getting a keyboard that allowed more options for creating music beds and doing original music in a studio and that's the Mo ES. I'm still a fan of the Yamaha PLG150-PF piano expansion board which seems more comparable to the Kurzweil for tonality to my ear, so I can always add that to the Motif if I decided to be critical about the piano, and add another 64 notes of polyphony in the process. Also I believe the Motif ES will become one of the best-supported keyboards on the market with direct feedback from Yamaha via their motifator.com website. Overall the Mo ES 8 is the most powerful and in-demand synth on the market and it's no surprise that other synths are dropping in price to compete.