I've owned this desk for a little under a week, and so far, I am extremely satisfied with it. It feels sturdy all around without any wobbling or shaking, and the surface is extremely flat and even. The lifting and lowering is very smooth and is one of the quietest I've heard. I bought the 29D x 70W desk. It's holding two monitors (high-refresh, on the heavier side), two speakers, my DAC & Amp, metal desk mic, mouse, keyboard, and my laptop, and the desk lifts everything effortlessly.
I don't want to call it a complaint because it wasn't that much of an issue, but I would say there's definitely some room for improvement with the assembly instructions. First, the screws aren't identified in the exact same way in the instructions compared to the bags they come in. The screw packs in the instructions have two identifiers such as "S-90" and "M6 x 8mm Set Screw" or "S200" and "M6 x 10mm Button Head". I've thrown the empty bags from the package away at this point, but they lacked the "Sxx" identifier and had a different label on top. They did have the "M6 x 8mm Set Screw" description on the bottom of the bag, but it was done in such a way that I was constantly double- and triple-checking that I was using the proper screws for each step.
The only other criticism I have is that the steps for securing the slide rails could have been much clearer. You just have to make sure they're more or less centered under the desktop and screw them down with the proper screws. It's makes 100% sense after doing it once, but I had to pause for a while during assembly and even did a small search online to make sure I was lining up the rails properly. The instructions emphasized a small channel + slot in the rails in one step (which is indeed where/when they had to be put in place), but didn't show how to secure them for 3 more steps. Due to the transparency in the diagram on the first step, I was unsure as to exactly how these slide rails needed to be positioned - both centered? staggered (one all the way left, and one all the way right)? In the end, not that big of a deal. I would suggest adding a few sentences or small paragraph to each page of the instructions with explicit details. The current manual is mostly going for a "pictures only" approach with a few warnings and "Important" text notes sprinkled in. E.g. "Important: Install screws loosely", then "Important: tighten all screws".
Overall, the assembly process still went pretty quickly, and I did not have any real issues. I can't comment on long-term durability, but I'm very happy right now with the final product, and I would gladly buy this desk again. Plus the 10-year warranty? Amazing stuff.