Ian,

This has been hashed out ad nauseum. The Wersi does not require you to add anything to make new sounds, tweak to your delight, or get it to do what you want. OOTB it has nearly 1 GB of factory sounds. It just has the option of expanding using VST's for those who don't want to be limited in the way other manufacturers limit you. There are many free and/or inexpensive VST's to utilize. Nobody said you have to run out and by East West or Omnisphere. However, if you were so inclined, at least that option is available to Wersi users.