Hard to say what is a best since it could be a matter of personal preference, but you can get a lot of choices here: http://www.tvc-mall.com/search?cid=&q=note+3+wallet
If I'm looking for no-brand name accessories, I typically deal with either tvc-mall.com for cases or dx.com for other gadgets.
This seems to be nice looking.
I like texture of this case.
I have not seen any brand cases where they have those card slots and have nice texture.
Many cases looks so wierd and poor quality.
Looks very similar to one of the S4 cases I tested/reviewed from case-parts.com (it's the same company as tvc-mall.com), here: http://forum.xda-developers.com/showthread.php?t=2319150 - scroll down to white wallet case. The texture and built quality was very good.