I am probably losing half my braincells every hour but I couldn't figure out what your story and dilemma is. Seems like you have the top of the line of everything and two of each. Good for you. Always buy the more expensive option, it will most likely sound better.
Wish to Upgrade Phono Stage and Cart
My current setup is a Rega P10/Apheta 3 cart sending signal to an Allnic H5500. It sound is very pleasing to my ears.
I placed the Allnic H5500 in front of my vintage Yamaha CR820 and Technics SL1800. Wow. Did not see that coming. I could listen to that all day.
My current setup is a Allnic T2000 30the Anniversary integrated. My Turntable a Rega P10.
I entertained getting an Allnic H8000 dht but feel that's a bit overkill for my system. I'm now entertaining an Allnic H7000 along with a Cart, perhaps Rose or Amber (all in the family) or even the Rega Auro with the Aphelion cart.
I'm not the sophisticated/knowledgable audiophile when it comes to vinyl setups. Too much focus on digital over the years I guess, so I look for advice from this knowlegable forum.