While we don't yet have a dedicated case for the Behringer X-touch, one of the cases in our UNISON line may be a good fit!
The dimensions we have on hand for the Behringer X-touch are: (17.8 x 11.85 x 3.94) inches. If that aligns with what you have, we would recommend looking at the Unison Custom Edition: XL: (24.5 x 13.5 x 4.25).