Ric Freak,
Softsynths, with the proper soundcards, do have quality sounds, but they are not practically portable. This product breaches that problem, that is why it is a very exciting idea.
If their is a "sound" that you like, you may be able to buy that sound font or software and install it on your EKO. No need to run out and buy a new keyboard just to get that sound. Of course Roland, Yamaha, Korg, etc, won't like it and won't make modules specifically for it, especially initially, but that will be their demise. They will have to come out with their own EKO's, but user's only need one. So they will have to either support the most popular model or go bust.
I bought the best VCR available at the time, BETA VCR. I still have it in the basement. More people bought VHS, so the world supported that one. Beta was relegated to history.
Your EKO will have your personal sound, because you will install the fonts and softsynths that YOU want. As an arranger keyboardist, you will install YOUR favorite arranger software.
Starkeeper