The staples case has worked great for the reader so far.
I wanted another case that I could stick the reader plus case in when traveling to keep it from getting accidently crushed.
I found this hard case at walmart for 19.95.
http://www.ideastreamproducts.com/vaultz/Wallet.html
The 48 cd wallet case is a good fit for the reader with default sony case plus the staples case.