About to mount a projector in a finished basement that is turning into my media room, and getting mixed messages. Some people say that I should hire someone to open holes in the ceiling to thread the HDMI cable through the joists from the receiver at the front of the room to the projector (about 15' back), whereas others says that I should run it through a surface conduit--just in case the cable fails or needs changing. Is that true? If I bury in the ceiling and do the drywall patches, which obviously would look cleaner and more professional, will I be in trouble, unable to fish out the cable? Thanks!