I personally have 2: The "Dandelion" and "Heather".
When in doubt, I would prefer the "Dandelion" as filigree.
Both are extraordinary and beautiful to look at, so I'm going to probably sometime even approve the "Thistle". Not surprisingly, that the paperweights act directly illuminated from (sun) light on the most beautiful.
However, if in addition to these acrylic sphere represents a real glassblowers work of equal diameter and acrylic and glass ball successively takes in the hand, will understand why I a star (rather would me 1 1/2) have taken off: Glass is simply brilliant, feels valent (cooler, heavier) on.
I leave it with an asterisk, because I suspect that the combination of glassblower work / vegetable production engineering impossible?
Conclusion: The Briefbeschwer is undoubtedly beautiful and extraordinary, the (still significantly less expensive) souvenir from a glass factory remains, however, even after many years my favorite.