Although I own the leather case from Amazon for my Voyage, I much prefer the cases made by Noreve, a French company.
I still have the wonderful case for my older Kindle 2 (which is currently in Arkansas).
Here's the one I ordered, from Noreve, for my Kindle Voyage:
Amazon Kindle Voyage leather case
Model : Tradition B - 15612TB20/f
Finishing : Ambition
Leather exterior colour : Ebčne ( Sleek P C12 - Black )
http://www.noreve.com/en/kindle-voya...yage&results=1
Their cases are exquisite!