While at Macworld 2010 I met the guys from Monitors in Motion. I bought two their arms (at a discount (full disclosure) so that I could try them out. Here is a video of the process to install the VESA mounts and arms on my Apple 23" Cinema Display and Samsung 25" display. The process took about 3 hrs in total and I did get some assistance from Adam. Overall the build quality is superb. The only thing that lacked was documentation on how to mount them . I've talk to them about this and they are working on this aspect. Otherwise I'm thrilled to have them.