I bought one of these a few years ago for my drum kit, and was so impressed I bought another for my lighting rig.
Both of these were sold (with the kit and lights), so when I bought a new kit and needed another bag, there was no question where to go.
These bags are not as 'solid' or padded as the Protection Racket bags, but they are cheaper and lighter. I reckon they are just as strong, and being more flexible (pliable) they can fit more things in them (such as awkward shaped 'motorcycle' type drum stools).
It's a simple bag, but the handles, seams, zips etc are all very well made, and will last you many years of gagging.
If money, weight and flexibility are not an issue, the a Protection Racket bag is possibly 'better', but this is much better value, and far more versatile. Highly recommended (this is my third one!)