I briefly used Mogami 3104 (double-wrapped into single Left-Right BFAs) with a Naim source and Linn pre/power separates. The sound was "okay" but nothing overtly special. The sound improved substantially when I swapped-out the Mogami for AQ Bedrocks. The Bedrocks were moderately priced; more expensive than the Mogami wire, but substantially lower priced than the 8TC
Another thing to consider would be upgrading the ICs, or using Kimber 8PR or 8VS instead of the 8TC. I'm now running Kimber 8PR in a system that has an Auralic source with an Ayre integrated using Nordost Valhalla balanced interconnects (purchased used). A lot of the fullness and detail in the sound goes away when I swap-out the Valhallas and use AQ Cheetah IC instead. The Cheetah is very good, but the Valhallas are MUCH better.
I don't necessarily recommend purchasing Valhallas, but mention this as you might be able to get closer to the fuller sound you seek via different ICs.