9, lol
since regular receivers (R10, r15) and such can be plugged in to the 6x8 then the 5x8 (well 4 x 8 sinc eim not using the other input) should be able to be hooked into the 6x8 sucessfully. I could deal with 8 runs but would prefer 9... all the cables are run but ide like them to be live.
Geez, how many tv's do you need to watch at one time.