I purchased an AVR300 a couple of weeks ago, and have been using it in stereo mode (with a subwoofer) since that time. I am now ready to go out and purchase my center and rear speakers. Because I have virtually no previous experience with home theatre, I am in the dark with respect to the cables that I need. I know that I will need audio cables for the center and rear channels. But I am unclear about the digital cable(s). Should I go coaxial or optical? Do I need one or more digital cables? Any help would be greatly appreciated. BTW, I am using Quad ESL57's for my main speakers, a Velodyne F-1500-B for my subwoofer, and will be purchasing Magnepans for the center and rear speakers. I am using a Sony DVP-NS900V for DVD, CD and SACD playback.