No one here seems to understand this is scripting of existing sounds. What was recorded might have been quite mediocre compared to VSL, which does things the most basic way - with a good sound from the ground up. This scripting allows an old limited sample library like x sample, or a private library of extremely small size to be used in a new way with all sorts of tweaks applied automatically, and probably adjustment of harmonics etc for realistic legato without pitch bend weirdness, etc.
If I am wrong about this, go ahead, correct me but I believe all this desperate desire for these samples is misplaced. It is not in the samples. You already have better samples. It is how they are used. I found that somewhat irritating, about the solo cello - the VSL solo cello is in no way inferior to this one. It is in the useage, not the samples.