I have a similar looking one to the geekdesk model, but it was from a local company at a cheaper price.

Had to add some improvised shock absorbers and place it against the wall because my monitor would otherwise shake when typing...

Did investigate several other options after that, up to 1500 euros and they all shake (the expensive one even more so).

Does the geekdesk model also shake?

That said, with my shock absorbers (just two pieces of memory foam), and sliders under the desk to move it against the wall, it works just fine and a great investment for general health.

Also have a mini stepper to do an hour of stepping in the early morning, whilst I read my email and check my RSS reader.

I may upgrade to a treadmill later, see http://officewalkers.ning.com for inspiration