Uncertain how they compare, but the Video Secu wall mounts are well regarded. Mine was easy to install and does the job very well. (Just for reference and comparison: )
Most important tip I can share is to know where your studs are, and hopefully be able to avoid using drywall anchors.
The one I linked to above allowed me to install the mount off-center and has some room to move the TV a little to center it on my wall. The dual arms are great for stability.
Have you considered a dedicated Center Channel Stand with the equipment rack off to one side?