Diki,
You have no clue what you are talking about but you sure can run your mouth. You can spew negativity about Wersi all you want but you are stating your opinion based upon never having used the instrument. I'm certain if you had used one you would be eating crow right about now.
Out of the box the Wersi sounds fantastic. You don't need to add any VST's, additional samples, or tweak the hell out of it to make it sound great, the sounds are already in there. About 1 GB of factory sounds to be exact. If those sounds aren't sufficient for the end user then they can happily add AKAI samples, VST's, and STS samples from Sonic Core.
FYI... Wersi sells the NI B4 as an option because it adds a different flavor, not because the Wersi organ sounds are crap. Far from it. Organ sounds abound on the Wersi but contrary to what you believe its not an organ, its a full fledged arranger and workstation. Show me one other arranger/workstation that has the same capabilities OOTB. Only the Mediastation has similar features but it lacks Wersi's great factory sounds and intuitive interface.
Before you continue to spew rhetoric why not find a Wersi owner near you, try the instrument, then feel free to ramble away. I'd much rather your opinions be based in fact.
I've owned Yamaha's, Korg's, Roland's, Technics, and I would never rule a purchase out based upon others opinions or some crappy online MP3. I'd never have bought a Technics or Wersi if I based my purchase on opinions from others here in this forum.
If hearing an MP3 demo and having people tell you the instrument sucks having never actually used one themselves, more power to you.