Thanks guys. I am a relative newbie to Home Theaters and I was under the impression that the optical connection was the 'best' since it is all digital and is essentially equivalent to a digital coax connection. Is this true?

I checked my DVD player. It has an optical out but not a co-ax digital output. It also has a 5.1 channel audio out and I now remember reading somewhere that this is better than the optical? Any advice on which connection I should use?

My receiver is HK AVR525 and the DVD player is Panasonic F-85.

Thanks.