I'm extremely happy with the Sit to Stand Adjustable Desk! It was recommended by a colleague that loves it too. I am able to check my email and do most of my work standing. When I want to sit I have the option to lower my computer to fit my chair. I highly recommend the switch from a stationary desk top.
It's a little bigger than I thought it would be once I got it on my desk but plenty of room for 2 monitors and my laptop. iPhone slot is nice too. you have to pull on it to get it raise which is better than it flying up. All in all it does exactly what I needed it to easily switching from sitting to standing.
The sit to stand desk is necessary for the health of my back and legs. It is agreed that sitting for long hours is not beneficial to your circulation or lumbar region of the back. I recommend the Staple's brand
I use the desk riser at the front of my high school classroom. I did not need to connect the keyboard shelf since I do not use a separate keyboard so all I had to do was take the desk out of the box and put it on a low table. This desk has helped me to stand up more encourages me to move around the classroom more and creates a podium that I and my students can comfortably work from/on. The 35" allows for me to have paperwork a mouse and room to write on the surface along with my laptop and mini projector.