So now I need advice on my rear speakers! Right now im running my r28f's as my rear channels. I am going to most likely sell those. I'm considering the rb-51, rb-41, and the rp150s. Should I mount these mid way up the wall or at the top of the ceiling an point them down? I have 2 Atmos Speakers, should i hang the rear one high so I can run Auro 3d? I still have limited knowledge on this but I'm not sure my best option.