The motor on one side did not work when the desk first arrived. However, I contacted the shop, they reacted quickly, they assessed the problem correctly and sent me a replacement motor with helpful instructions. Since then the desk is working just like it should, it looks good and it was straightforward to assemble. Of course, the desk can slightly vibrate at large extensions of the frame, but it does not feel unstable in any way. Also, I feel that this is quite normal with standing desks to a certain degree, and it's more than acceptable in this price range.