Re: Are cables the weak link in your system?
Frankly, cables do make a difference, and they all sound and measure a little differently. But unless you are listening for timbrel and spatial accuracy with the goal of reproducing recordings as though they were reality (the audiophile experience), little if any difference is likely to be perceived.
This is also true of digital, video, and power cables. So again, if your scrutinizing the playback for absolute quality and believability, you will definitely see and hear a difference. Some designs are certainly better than others.
But in the end - you first need to have clean, tight connections.
Otherwise, any improvement becomes nothing more than a crap shoot.