Just some observations:
Compared to the Fracture6 there is now no orientation of the [corners of the Fracture6] centres of this puzzle.
There still wouldn't be orientation of the [centres of the Fracture6] corners of this puzzle.
I like the way the square face looks when it is rotatable by 90*.
I think one of the difficult things about the puzzle is the visual confusion. The rounded puzzle takes away some of this visual confusion (it's easier to see where some pieces belong). For me, I would prefer the flat one, it would be a bit trickier visually (although colour gives it away too).
Overall, I like them, they look really nice, but I think I would still prefer the Fracture6