Do you prefer Donner or Donder?

[Scarface32]

'Twas the Night Before Christmas

There are two different versions of this book, one that calls a reindeer "Donner" and the other that calls the same reindeer "Donder"

So which version do you prefer?

Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donner, and Blitzen.

Which is the more traditional way, plus the way I grew up to know these names. But some books have it spelled and pronounced differently.

Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donder, and Blitzen.

So do you prefer Donner or Donder?