I've been suffering from issues related to a disk on L5 pinching my sciatic nerve. Sitting for long periods makes the problem worse so my doctor recommended I get a sit/stand work station of some kind. Next I went to facilities where I work to find that if you work in an office, they'll provide a unit - complete with ergo eval, etc. Great until I found out that home office workers (i.e. me) don't receive this benefit.
Next I spoke with one of our ergo experts (outside consultant) and he specifically recommended this Varidesk model. His opinion is that it is one of the best for the money. Here's why I'm a big fan: 1. Well packed. Came out of the box easily with no damage. 2. No assembly! Just remove packing material and put it on your work surface. 3. Very sturdy and well designed. The spring mechanism makes adjusting from sitting to standing simple and smooth. I often have a cup of hot coffee sitting on the stand when I adjust it - no worry of spilling because it moves so smoothly. 4. Lot's of positions. The unit easily 'freezes' at many heights. I'm 6'1" and it is plenty tall with more room to go up. 5. More work space! I compared this unit to the Ergotron WorkFit-S 33-341-200. My wife's company uses the Ergotron so I was able to go in after hours and play with one. While the Ergotron is a high-quality unit and seems to serve the purpose well, it pretty much has only enough work space to hold your keyboard and mouse. But this Varidesk model has room for a notebook (great for taking notes during calls), keyboard, mouse, and tons of additional room to spare - hence my hot coffee. The Ergotron also requires that you clamp it to the front of your desk. Simple enough. But for me that meant limitation in the front to back positioning. I like that the Varidesk can be placed anywhere on the desktop, allowing flexibility in front to back positioning.
Varidesk is a winner. One of my favorite purchases in a while. BTW, my back feels WAY better these days. :-)