Like many have commented before, it is best to find the limiting factor in your equipment (the weakest link), and upgrade that. In most cases, subtle differences in cable quality will not make a noticable differece.
However, like almost all things in the technical world - it depends. Are they really better then everything else? Yes, slightly - at least in the audio world. I share from experience that sometimes the extra cash for the Monster Cables can make a difference. I wouldn't recommend purchasing their video cables or even basic speaker cables. Where I did find a noticable improvement in quality was the subwoofer cable.
Not knowing details about your room / soundsystem, I can't predict how much of a difference this would make, so I recommend trying it out for yourself. See if you can find someone who has and will lend you some of the cables you are interested in and try them out in your own comparison test, because it's only your experience - not that of reviewers - that counts. You may also find somewhere to buy multiple cables that will let you return them without restocking fee within so many days. Try for yourself and ask: is this an $XX differece?
I keep hearing alot about Monster Cables and power centers. Are they everything they are talked up to be? To get good quality is it necessary to spend $150.00 on power centers & cables?
I am hooking up a new 56" Samsung DLP - HLR5667W - to a DVD/CD Player; VCR; Reciever & Bose surround sound system. I am getting digital cable & HDTV too.
Can anyone help tell me what I need to purchase? What brands are good & will work?
Thanks![]()

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic