Let me first say yes I understand there will always be a market at some level for someone who wants a Lego Death Star 10188 to complete their collection.
That being said would you say since both are OT that if a kid or adult did not own a death star would there be any compelling motivation based on what you have seen that they would want to purchase the older one instead of the newer one ?
Would you say that purely on the basis of not owning one wanting to buy one and which one is better that it is 100 new to 0 old as far as interest level ?