Love mine, think it's the middle size. I carry a small machine in it, (singer 404, and now Eversewn Sparrow) which leaves room for a few rulers, small iron, table light and zip lock of basic tools.
Got it at 50% off Joann's online.
#1, how often will you be using it. A more furgal one might work ine if you only go a time or two a year. I mean, you pack them in and out, not use them continually.
One of the wheels broke, ordered a new set from dealer, no biggie. Not sure if you could do that with off brand.
I like that the frame is strong enough to lift it in and out of the car, good hand holds.
That the puller arm is strong
that i'ts LIME
and the fabric is heavy duty canvas
I've never stored mine, it's always teady to go with dedicated tools, but it folds down small if you do.
I find the extra pockets superfluous to need, but I only carry basics, not everything I own. I prefer to put everything in by the machine. My sewing is kitted up ready and sometimes fits in the case, sometimes carried under my arm.
Maxium weight is about 30 pounds total for lifting. You could Really ramp that up with a big machine and tons of tools and food and laptop and on and on.
Up to us to make our tools work the way we need them to.