The adjusting feature works very well and smoothly. I can raise and lower my desk with my coffee mug and water bottle sitting on it without worrying about spills. I wasn't expecting it to be that smooth!I purchased the all-black model and it's heavy but sturdy. I'm very glad it has an option to install wheels, because otherwise it would be unwieldy!The keyboard tray is really underwhelming. It does not pull out enough. I've made due by removing my wrist wrests, but it can still be frustrating at times. I also prefer to sit to the right side of my desk rather than center, so I have my keyboard slightly overhanging the tray. This works fine but isn't ideal. People who prefer a center-setup should be okay.Some pieces were not packaged well, and I thought I was missing a screw. My partner found it loose in the box thankfully, but that could have been a catastrophe, especially since the box arrived damaged!!!Despite the keyboard tray issues and the packaging concerns, this was a great investment. I'm really pleased with the quality for the price. I work over 40 hours a week from home, and I'm enrolled in an online MBA program which is another 20 hours a week online. I'm so happy to get some standing time in during my 60+ hour work/school schedule!