The delivery of the Heatbed was very fast, so if I need other spareparts I will certainly consider this shop again. For the heatplate itself I could not find any difference to the original part yet. The temperature seems not to rise much faster than on the original plate, the temperatur seems not more evenly distributed. I couldn't make a direct comparsion though as I have only one printer.
I propose to mount longer cables, so that the connector could be fixed directly on the frame. The original cable of my printer already broke once because it is constantly moving back and forth with the plate. This bent the cable directly at the connector too much and too often, it broke. The cable on the new plate has the same lenght, same problem. I hope it doesn't happen again.