This really is a good basic sampler. Sure it isn't Kontact or Halion but it really does provide high quality basic sampling.
My only real gripe with the DS404 is the GUI. While it may be just a issue of getting into the "habit" of using its four button system, it is certainly not the most intuitive method for editing a patch.
Pros - Good simple VSTi sampler, nice sound, very easy to install, good collection (with some fixing) of presets.