I'm in the market to upgrade DVD players and I see wide variance in the video DAC ratings. Most newer models are 10 bit/54 MHz, but I've come across a few that are 12/108. The chips look like northbridge/southbridge chips on a PC motherboard. If they are at all similar, make and speed of the chips make a HUGE difference in system performance. Is this analogy remotely valid? If not, how important are the video DAC ratings?