Thanks for the response. Today I borrowed sets of Chord Chameleon Plus, Chord Chorus 2 and VDH First Ultimate from my dealer Doug Brady. I've had an interesing evening testing them on a range of music. My findings below may be of interest to those faced with a similar problem and/or similar equipment.
As mentioned in the OP I was a little disapointed in the sound from my system, being rather less than the sum of the parts and suspected the old interconnects as being responsible for the lack of warmth and musicality (for want of a real adjective). Being an engineer I am a little sceptical over magical powers of bits of wire but also open to the possibility that poor bits of wire may be blocking or distorting the weak signal between the CD and amp; so I tested the cables with as much of an open mind as I could. All of them seem expensive for bits of wire, but I would be happy to achieve an incremental improvement equivalent to spending similar money on a more expensive amp/CD/speakers.
First music Joni Mitchell Hits (repeated Chelsea Morning, Big Yellow Taxi and California a couple of times) with my current vintage 20 year old Cambridge Audio cables; I wanted to remind myself of what I disliked with the sound. Most noticably a shrillness to upper frequencies and a general lack of emotion. Next up the Chameleon plus, immediate rounding of the sharp edges, more rounded sound and lost most of the shrillness, also maybe a little better definition to the soundstage. (Hmm maybe there's something to this interconnect lark!). I expected that to be end of story as the percieved wisdom here and elsewhere is that the price point of the Chameleon Plus is appropriate for the rest of my system, just to confirm with the Chorus 2............
Wow, like the Chorus 2 is the final destination with the Chameleons only being half way there, much more tune to the bass and real emotion to the music. I switched back and forth between the Chorus, Chameleon and CA a few times to make sure the difference wasn't due the the gear warming up and/or me chilling out but this only confimed the benefit of the Chorus
Next stop the VDH, similar price to the Chorus so i had high expectations - but no good on my system; I lost a lot of treble and bass definition, which I had just found by GS10 speakers can excel at with the Chorus 2.
Time to change the record (CD) Stones let it Bleed and specificaly Gimmie Shelter and You Got The Silver. This followed the same pattern as Joni with the Chameleon being a noticible but incomplete improvement over the CA. The most striking difference with the Chorus us a big whole opening in the floor re tuneful base and just so much more musical. I was begining to realise that the VDH (on my system anyway) is maybe better suited to those who prefer "like a Rolling Stone" sung by Andy Williams than Bob Dylan.
Corine Bailey Rae Just Like a Star: CA: Cold shoulder, Chameleon: well maybe?, Chorus 2: on my lap
Change to Classical with Mahler 9 (Deutshe Grammaphon, Pierre Boulez) first up VDH - wow! opening bars suddenly sound sublime but loses it when the brass and lots of other stuff comes in. Looking forward to the Chorus but the opening now sounds less good then the VDH, however Chorus holds it together when the brass etc.. Intersting the strength of the VDH seems to be on mid range which may be good on some systems. Once again the Chamleon only seems half way there. keen to explore the VDH/Chorus difference I went to Schubert Piano Sonata 21. SLightlu disconcerted wiht weird background noises on both cables then realised it is pianist breathing (not noticable on CA interconnects) The comparioson confirmed that the VDH was agin not up to the Chorus.
next up Led Zep 3. The Immigrand Song confirms that no interconnect can convert the GS10s to a Marshal Stack. However the more tuneful bass riffs on "Since I've been Loving You" and "Gallows Pole" stand out much more on the Chorus than the other options.
Conclusions:
Cheap or old cables stifle good components, good cables can realise potential of good components. I suspect there is a great profit margin on cables but they are probably better value than more expensive components with poor cables. I'm not sure if some expensive cables are not very good or just more suited to addressing particular system foibles
Upgrading to Chorus 2 enables my system to give a sound very close to what I heard when my CD player was on test with the Quad system in the dealership as i mentioned in my earlier post.
Over and out.