I hesitate to say which one is better. More leakage on the right, dark line through the center on the left. I would need to see the
cushions in action (moving) to give a better answer. That dark line through the center may be a no-go for me. I dont think either of
these is a great example.
Do you have links to these stones? Can you put them on hold and provide links?
The left looks better than the right, but I'd absolutely have to see a picture and video of it to see what those black facets do in real life viewing. I do not like the one on the right.