Hello - I've got a 4K TV that I have on my fireplace and need to make the HDMI cables disappear. I was originally looking into wireless HDMI but from what I've seen they are somewhat unreliable and are only 1080p. I'm considering other options including running the HDMI cables into my wall cavity or possibly a HDMI extender. I'm really just looking for some advise. Unfortunately I'll be looking at running the cables horizontally in the wall cavity, which won't be very easy to do. I'm guessing that running the cables behind the wall will give me the best signal. Right now I only have an Xbox One and a Blu-ray player to hook up but I'm assuming I'll eventually get a 4K player and a 4K gaming unit. Any thoughts or opinions would be appreciated. I'm just starting to look into this and am hoping for some guidance. Thank you.