I'm thinking about buying an articulating arm mount for 60"screen. I figured it'd be nice to simply pull the screen out while still hanging in the air and do any cable adjustments if necessary without unmount the whole TV out from a wall. Could you recommend the best brands and the models? Which one would be the most sturdiest articulating mount out there? Above all how safe are they? It'll be secured on a concrete wall so weak wood studs are not a problem for me. Would the TV be still wobbly even if the atriculating arm can support what it claim to hold?
In particular, I was looking at two models available from Costco that support up to 60".
Item # 969056 and Item # 126884
which one would you recommend the most?