Really great to read your experience. As a fan of TA since 2005, I can say as a TA Opus 5 owner they now are the 3rd longest running component in the system brand-wise and are still here. CJ ran from 2000 until 2020. Zanden from 2008 to today. Wilson from 2010 to today. Gryphon from 2010 to today. Velodyne from 1996 to today.
The consistency of TA ranks up there for me, and I also have a complete loom of their signal cables from end to end. On the power side, I only experimented (once the signal cables were all in) with the Opus power cable...and went a different direction. Sablon Audio Prince (Orange). That said, I never went 'end to end' with the Opus power cables...I only tried 1 of their power cables in comparison with several others I had at the time (Crystal Audio Absolute Dream, a big Siltech, PAD 25th Anniversary and 20th Anniversary) in the amp and again with the preamp.
If I ever decided to go back and listen to TA power cables, I will ask for a complete loom just in case. Enjoy your fantastic system.
BTW, can you provide any comparisons with Opus Gen 5 and Magnum Opus Gen 5? I have witnessed/owned/auditioned at home: XL MM2, XL Gen 5, Opus Gen 5 so have some familiarity with the uplift of each level. Would love to learn how the uplift from Opus to Magnum Opus compares relative to these other level upgrades. Again, I own Opus Gen 5 today and have read JFrech's comments about upgrading to Magnum Opus Gen 5 in the past. Thanks for any additional insights!