I have to agree with @audphile1 that the Gen 6 is more balanced. top to bottom, meaning you are probably hearing your amp more clearly.
I use Transparent almost exclusively. You can see my systems under my user ID. I have found Transparent to be… well exactly that. And Generation 6 is a significant improvement over 5 and earlier.
I spent over a year with my amp (ARC Reference 160) trying to find the right power cord. I felt the Reference Gen 6 power cord was very good, but hesitated for some reason (I felt I needed XL or better). I have Reference on all other components, and they are perfect. I tried all the higher level Cardas… and always too warm… but varied with cost… less warm the more expensive. My dealer finally brought over an Audioquest Hurricane (high current)… that was perfect and only $2+K. So, for me that was the perfect solution. Btw, 2 meters sounds notably better than one.
Considering what you have said, here is my opinion: The amp you have is known to be very detailed, neutral and on the analytical side of the spectrum. This is why the older Transprent was appealing… it wasn’t as neutral. So, I am thinking getting a better Transparent may not be what you want. I would recommend you try a Cardas Clear Beyond. I think it will balance your system… giving it a bit of fullness that you will not get otherwise. Find a dealer to lend you one.