Well, the Wersi is more interesting like the Eko, they have a lot of years of esperience, but still they use Windows and one PC sound card.
The difference from Windows and Linux is that Windows dont give the possibility to open the code and fix the bugs. They have installed the Cubase sequencer and all the function are recalled ONLY by touch screen by pointer, like a mouse. When you play live, try to find a midifile, or change the sound or open a CD's.... all this function by touch screen mouse?? And when you have time for playing?
Anyway Wersi make a wonderfull case but are products for stay at home and not for stage.
price of wersi start from $5000 to the big model $ 49.950....
Mediastation X-76 cost about $6000 and the wight is about 27Kg. Only the 76 long key's wieghted pro are 10Kg.