Hmm... I have a Behringer Neutron & Model D & 2600 all work well and as they should. Very good price-quality ratio.
I also have 9 pcs of Behringer eurorack modules.
In terms of quality, they are no worse than modules from other manufacturers. In fact, even better than a few manufacturers. My current modular currently has 69 modules and behringer's modules are actually the 2500 & System-100 modules I use the most at the moment. Apparently some of Behringer's early system-100 and system-55 modules have had a calibration problem. At least for System-100, the problem has been fixed.
In terms of durability, of course, the potentiometers could be attached to the front panel and not directly on the circuit board.
I will continue to buy Behringer modules if I find a module that interests me.
Buy the modules that interest you.