Quality is five stars, but unfortunately not perfectly practical.
The cart is a bit on the narrow side, That's not too bad, unless you use it to move an oversized heavy load (I tried today and that didn't work well). This and the fact it's not convenient as a two wheeler (no parts are conformable for a firm grip) kills a star.
The front wheels (larger sized) are non-inflatable, but the rubber has plastic feeling, no sponginess at all and tendency to slide on smooth surfaces under light or no load - another star has burned.
On the positive side: The locks for the folding sides are simple and sturdy.
It is not too heavy, quite compact when folded and quite well built. This bumps the stars up.
Assuming I have to buy another one, if weight and size are not critical, I would try Thomann's own brand XL sized cart despite I don't like the wired folding lock.