I tried several cases (mostly from eBay) and utlimately found the best one for this particular tablet if you plan on using the IR port: "360? Rotating Leather Case Smart Cover Samsung Galaxy Tab" - just search ebay.
The reason is that it swivels and it provides quick access with full protection when closed as well as having full access to all of the buttons and ports on the tab so the IR works 100% of the time. I tried several: one that was more of the classic rubber, one with a hard case and a folio style and none of those worked reliably with the IR port of the remote control software (Peel) - but then again I am less than impressed with the Peel software and looking for some app that takes advantages of the IR so this can be a good universal remote (the primary reason for purchasing).
Take care...
Bruce P.