Successor to the T-Finz Zoggs with significant changes

Here is a comparison of the two models:
(There is also a photo with both models compared is set)

Zoggs T-Finz (old model):
Fallen from small
comfortable resilient
great neck to the toes, they can look out something

Ultra Blue Fins (new model):
Fallen from normal
somewhat rigid
Cutout on the toes much closer
in the rear area (at the heel) very far

Conclusion:
For our needs, the new Ultra Blue Fins are not an alternative.
Our old T-Finz Zoggs have become too small in 41/42 and should be replaced with the next size up.
The new Ultra Blue Fins are in 43/44 but way too big and in 41/42, although long enough, but the front so narrow that the big toe is strongly pressed inwards and the fin scrubs.
We will unfortunately have to try a different model.