The thing I have found about cables...
Use the best type of cable you can...and who cares about the brand...
HDMI High Speed > HDMI Standard > DVI > Component Video > S Video > Composite
As for audio...
Digital Coax > TOS-link Optical > Stereo
The Digital Coax uses an orange jack that looks really similar to a regular old RCA jack...
The TOS-link is a weird looking D-shaped connection that use a fiber optic wire...
Stereo is stereo, red and white RCAs...
Thing to remember:
HDMI will carry video and sound both...
So, you can have a single cable for each HDMI device...which is awesome...
As an example, my Wii has four cables...video, two stereo cables to TV, and TOS-link optical audio to receiver...while the rest of my home theater (Blu-Ray, DVR, receiver, TV) has the same exact number of cables...the reduction in clutter alone if you can go to all HDMI is worth the price, IMHO...