I have the Jsaux mod case. The grippy texture is great and feels so much better to hold than the plastic of the Deck, especially for long or more intense sessions where my hands might get a little sweaty.

The attachment features on the case are honestly kind of a gimmick (I mainly got it because I wanted the USB Hub) and the kickstand is a bit too heavy (but very sturdy) IMO. I do like the snap-on protective cover though, it’s made well.

The Killswitch is more expensive but would probably provide all the same benefits.