RhinoRally

Hi. Old post but just what I was looking for. I'm getting an outstanding deal for de RP450C, but I need to wall-mount it, underneath my wall-mounted screen, as I have my current centre. How good have these brackets been? Did they bend over time because of the weight? Do you feel "safe" with them? Would you add a second set to make it sturdier, or something to secure the speaker even more especially on the front? Thanks.