The Special Edition is just a summary of the entire library .. the Orchestra Strings Package contains LOADs more than the SE. More Articulations, runs .. everything .. on Strings of course. The SE is great .. but the VSL VI Library is huge and much better by comparison. .......... Although it's the wrong name for it .. try to see the Special Edition as being a lite edition of the VSL library. (It's still very good and great for many orchestral composing needs, but if you want seriously in depth detail then you want to look at the Full library). Check out the demos to hear what you can do with the SE.