Best value for the money is the Korg pa1000. Way more features and about 400 euro cheaper.. From Yamaha the best value for the money is the modx synthesizer. Ofcourse this is my opinion.
Here in Aust. The korg is listed as $500 more expensive.
Probably be able to get a better discount on the korg than the sx, at the moment because yamaha is brand new on the market. But that will change.