Magma Rolltop Backpack III

Pros: lots of inner space, can fit everything, special zipped pocket for laptop and 2 additional compartments on the front
Cons: durability, quality of the materials is far from perfect and it could get dirty easily, had some issues with ziplocks and tearing of the backpack.
Have been using it for around a year and currently it's my main gig backpack, hope to replace it with something of a better quality
But still there's not so many options on the market for big controllers, Hope it helps

I bought the bag because it holds vinyl records and other equipment, and if necessary, it can be increased in height by another 20 cm. The only problem is that the bag looks very big, which, if you're unlucky, can lead to problems with the crew on low-cost flights, as it is 10-15 cm higher than the allowed size (40 x 30 x 20 cm) and looks bulky. The two front pockets are large enough and convenient. And, the lack of a zipper and closing only from the top is exactly what I needed, because of my previous bad experience with bags with too many zippers that get stuck or break during travel.