Everything I've found points to Pomoca as pretty much being the best choice.
As mentioned above, I like my Pomocas, but the other European brands are great too.
I am less certain about G3 and BD’s skins.
My daughters (10 and 13) have Colltex Hybrid skins. Mohair/nylon mix and hybrid adhesive that makes it easy for even the youngest to rip skins with skis on (not much benefit for people with Shifts or Marker frame bindings, but if you have tech bindings, or Tyrolia or Fritschi frame bindings, that’s a big benefit.)
Also makes it easy for them to pul skins apart on their own.
Great grip/glide balance.
I read several reviews of the Contours that are really good as well.
And for those people shopping for skins, don’t forget the ‘ski branded’ skins. As long as you can use the tip and tail hardwear with your ski, it doesn’t matter if it says ‘K2’, ‘Volkl’, ‘La Sportiva’, or ‘Atomic’. They are still made by the same 5 brands of skin manufacturers:
Contour
Colltex
Pomoca
G3
Black Diamond
(Did I forget any ?)