I bought the table, tried it out and had to return it. I had a 160x80 cm board, which is a relatively large size. The problem is that when a board this big is on a table that only has 2 bases in the middle, the stability in the middle of the board is excellent, but the stability at the edge is not so good, including the low position of the table. (in the low position) When typing on the keyboard, one moves the forearm, which causes a large vibration to the desk, the monitors begin to shake. The keyboard strokes themselves jitter more with more prone monitors, not so much with more stable monitors. (low position) If you lean on the edge of the table top, the table top will bend slightly and the monitors will shake. I haven't tried it, but I believe that boards with a smaller width, say 60cm, can have much better stability, but wide boards like 80cm+ are really susceptible to shaking, in which case if one wants a really sturdy table, one needs to buy a reclining table with 4 bases in each corner instead of 2 bases. For more stability, perhaps a table top thickness greater than 18mm would help, but I wouldn't expect a miracle. So the product is not necessarily bad, but for larger table top sizes, 2 bases are insufficient for more demanding users. Unfortunately, I find it unacceptable to get used to the fact that the monitors shake. I don't know if anything has changed, but a lot of people here write that you can't extend the warranty for 2 years and you can't ask for after-warranty service, so after 2 years of operation if there is a malfunction, the product is basically thrown away. It is possible that this may have changed and after-sales service can be arranged, however, the warranty cannot be extended as of today and this makes it untrustworthy. I appreciate the communication of alza support, they have been very helpful and accommodating for a long time.