My two 6' cables are from Monoprice. As far as I can tell, I can only see the flashing pixels on the Pioneer screen, not the screen saver either, just when Pioneer is in the center of the screen. I don't see the flashing pixels when a disc is actually playing either.
I'll check the cables (luckily I have 2), the player, and the TV inputs.
Unless the wire gauge is a huge deal, I figured 28 would be fine since it's only a 6' cable.