We bought these cheap cases to our new rig, the handles are a bit weird to hold on and therefore not suited for cases larger than 6U. We had the 10U of the exact same product and it was a hassle to move, even with 2 guys. So ordering a 4U for mixer and 4U for amp supplies was the way to go, it's easy to take the boxes up on stage and down again. They are a bit wobbly, but a compression band around the entire stack makes it stable. They are cheap and seems like a good protective case for the price. Gators plastic cases are much more sturdy and has better handles, but costs 3 times as much.