What's the advantage in upgrading my scanner software? I currently use the Nikon software that came with the Coolscan V ED. I am not impressed with the speed and user interface of this software. Does it make sense to upgrade to either Silverfast or Vuescan? What are the advantages over the Nikon software? I would like to hear some opinions from users of this software. Do you prefer the one or the other? Basically what I need is larger previews for editing, easier control with several sliders and faster scanning speed (if this depends on the software at all). Thanks for yr help in making a purchase decision.