I ordered this case with my X18 mixer.
First of all, the case and it's components are top quality. First time I got to carry it (with mixer inside) was Home-Bus stop-Work. I was pleasantly surprised by the handle - it is very soft and comfortable but very sturdy at the same time. In 20 minutes of carrying it I had to switch hands only a couple of times.
Another thing that amazed me was the available free space inside. Of course the case holds the mixer in place, but there is plenty of space left. It fits the mixer, power cord, six TRS-XLR adaptors, a dual band Wi-Fi router and a short CAT cable. I'm pretty sure it would fit even more, but there hasn't been a need yet.
Overall I'm very happy with this case and would recommend it to anyone doubting if it's worth it.