Try amzer. Best for protection. But for looks and quality try " the racoon cases" hard plastic case saved my 1320 from a falling off the bike and survived with very minor damage
I personally have this flip cover, just in black. I like it a lot. It is an unnamed one from eBay.
"Plain Flip PU Leather Wallet Card Cover Case Stand For Microsoft Lumia 640/640XL"
I cannot post complete links yet, but here is the picture of it:
I would go with Incipico or Amzer, depending on what you are able to find inexpensively. The dual layer and skin cases they make cover most average users.