Well just for a fair competition - the fast running note is where DVZ shines. I've heard the early demo of the DVZ strings, while it sound weird and overly EQ'ed, but the runs were the best I've heard, sound just like a sampled run but you know, it's flexible instead of a fixed sample!
Also I've heard the VSL user demo did by Beat Kaufmann (if I remembered correctly), he used the trill performance to do the run and it's as effective, sound a wee bit "too perfect" and potentially limited in tempo range, but it's convincing for that particular demo (it's chamber strings so the runs won't sound too loose).
But then I'm looking at almost double of the price and not included the machines needed to run for DVZ, and triple of the price for VSL (including all strings). We'll see what Thonex can come up for that to compete with others (and hope my comments will give you more clues of what we want).
