My recent post about using mains cable for speakers rekindled my interest in this subject. I used to use QED SA which I felt was OK, however I am currently in temporary accomodation while my barn is converted and have bought some lengths of 50p/m stuff from my local electrical store (the guy said it would blow my mind). It was very similar to the QED although I felt I lost 'something'. I bought some 1.5mm two core and earth and tried that and it sounded a little better. I then dug out the QED stuff and it sounded identical to the flex. So, remembering I had a drum of cheap CAT5 in the shed I decided to knock up some TNT FFRC cables for a larf. I braided a couple of 3 metre lengths to the bi-wire recipe (3 CAT5 cables per side) and held it all together with electrical tape. I twisted the ends as I don't have any terminations handy and wired it up. I didn't expect any impovement. I was blown away. My wife, not at all interested in AV and quite content with her Teac mini system immediately said 'that sounds great' and it did. Much more punchy and revealing. The music became instantly 3 dimensional. I ran through some CD's and there are things on there I have not heard before. Things like tom-toms played by hand on Jack Johnson CD's were suddenly there. I switched back to the QED and they were gone again! I put on some Knoplfer and his guitar sounded like an electric guitar does when you actually play it with the amp in the room (like you can 'feel' it). The seperation and transparency were also markedly better. Now, I'm very wary of snake oil and also the way we can convince ourselves of certain things (especially having spent large moola) but this is for real. I've never had any knowing experience of any speaker cable over £10 a meter so I'm not saying that FFRC is better than those but it's definatley a distinct improvement over your standard cheapo stuff. The main benefit is that it costs about £1 a meter. Try it and see.