With your Memphisto and Q7's Toga, you have absolute reference components which will be sensitive to the smallest component or isolation changes. An old audio buddy liked the Symposium Ultra platform, but ended up selling his Taoc racks and moving to Symposium Isis racks. The Isis racks are a lot more expensive, but overall don't sound any better than Taoc. Only benefit was the aluminium structure had better synergy with his Vitus amp.

I've seen the Taoc SCB-CS65D board in my Dealer's showroom under a Dartzeel amp & it looks great. According to Taoc the CS series boards give a softer sound which might suit your Gryphon? You can only give it a try. You know my view

Cheers,