I am quite happy with my WFM desk and shelves. Standing and having monitors at eye level has significantly decreased my shoulder and neck pain and has increased my focus. The desk is quite nice to look at, and was relatively easy to put together.
I have some minor complaints that prevented me from giving it 5 stars: There are no written instructions provided with the desk, so when you open it initially it takes a bit to orient to all the pieces. I was able to put it all together relatively quickly, but there was some back-tracking and re-doing (I later realized there are instructional videos on the website, but did not know that at the time). The "wing shelf" with the laptop stand doesn't stay level, and I do not use it. No matter how well wedged-in the stabilizing piece is, it dips down somewhat. However, generally I am quite happy with this purchase.