Has anyone compared old to new Audioquest Cables???

I'm sorry, but I failed to answer another part of your question.  That is, regarding new Audioquest speaker cables compared to previous generations now selling as used for much less cost.  I can't make that kind of comparison, only to more recent cable models, such as those from the Rocket series.  My only other Audioquest speaker cable was from 30 years ago, when the company was very young and speaker cable technologies were nowhere near what they have been for the past 10 + years.  I am confident, however, that any of the upper-end Audioquest speaker cable from the past 6 to 10 years will certainly deliver an excellent value.  I still stand on my evaluation of the William Tell ZERO, though.  It has the latest technologies from Audioquest and it really shines above the models below it.
One more note; if you must go with a bi-wire configuration and choose William Tell ZERO that requires a separate Bass cable, terminated as bi-wire by Audioquest.  It gets rather expensive.  I had Rocket 88 bi-wire and chose the William Tell ZERO full-range.  It is vastly superior to the bi-wire Rocket 88 I replaced.  I simply added Audioquest jumpers to my speaker binding posts, bringing them back to a full-range connectivity.

@mammothguy54,
Great post!
Your experience mimics mine.
The new cables/conditioners Garth Powell is releasing are undoubtedly the best AQ has made. There will be doubters, but, those of us who have heard the difference, know better.
Bob

What models of the older top of the line cables are the model names?  I don't really know them.

Two more questions:

Between the Robin Hood and the WT models.  I understand the wire thickness but how much better are they in reality?

Last with my Vandersteen Model 5A speakers will the bi-wire be necessary (I see that one run is for the bass specifically designed for bi-wire) but how much would I lose using a single run with jumpers?

Thanks again.

Cables are specific to systems. Too many listeners vote with their wallet.

Depending on the connected equipment any cable change may be better, worse or no different.

FYI, I once auditioned [stupid names forgotten] $6k & $12k AQ cables in an B&W / Mac / REL $300k system. The high priced spread was just awful.

All advice on specific cables and most other recommendations are not worth the bits to transmit.

@ieales - I understand your posted position.  Changes may be system dependent.  My equipment is custom manufacturer by my company so I know that no body here hears what I hear.  My question was asking based upon ones own experience what did they hear.  Already mentioned above is for me to try them as buying at the used prices would allow me if I decided that they did not improve my sound could be sold for little to no loss.

Thanks for your input.