Handling: The padding on the handle is very comfortable. However, I always had to adjust the back straps to maximum length (not exactly the most comfortable position) and I still bumped into the door frames of metro trains if I didn't stoop down.
The accessory compartments could be bigger, e.g. you can fit a 13.3" MacBook into the simple Thomann guitar gigbags and the same would have been nice with this gigbag, but they do suffice for the regular stuff like straps, tuners, cables etc.
Quality: It is relatively sturdy for the size and especially for the price. The foam padding is fairly tough and even so the bag is still rather lightweight. After about 5 years of constant and heavy use (and increasingly big and heavy basses as well as lots of increasingly heavy accessories I had to fit in there), seams started to come apart, though. But that was to be expected, I'm actually surprised that it lived this long under these conditions.
In my opinion, this bag is a lot better than for example the Ibanez bags that you get when you buy one of their instruments. This goes for handling and comfort (padded straps and handle) as well as protective padding and general build/stability (tougher buckles on the straps etc).
The first one I got actually had a faulty zipper that broke after a few weeks, but customer service took care of that matter right away.