All the wahs in the Thomann range were listened to in order to conclude this one has the best tone, and all kinds of resources allow the comparisons so no need to talk at length about the tone. The thing is built tough, the hinge was silent at first then suddenly became squeaky but a few drops of oil obviously solved this.
Both inputs are tight and lock well, the hinge's range of motion is natural, not too long, not too short. Only the battery holder is plastic, not as tough-looking as the rest but it's underneath where nothing will touch it unless the wah is dropped, so it should be as durable as the rest with some care.
Only thing was, the switch barely registered and the pedal had to be pushed hard to the very max, so I removed the bottom cover to access the adjustment nut on the switch. I raised it a half-millimeter and now it engages easily with an audible click whereas it could barely be heard before.
By the way, opening it showed the circuit layout is clean, and all the soldering is done neatly. So five stars overall.