Thanks guys. I've got some CAT7 off Amazon, some CAT6a from Universal Networks, and some Vodka, Cinammon and Diamond Audio quest cables on loan so will be doing a bunch of testing this week.

Will also be testing the Isol-8 conditioners this week.

I did go for the MC200, so now have a DSP8000SE + 818v3 +MC200 set-up.

Audio: DSP8000SE upgrade, MC200, 818v3, Tidal, Bluesound
12 Bluesound zones, 1 Sonos zone, Roon
Movie1: Sony VW-790ES, 145” screen, Pan DMP-UB900, Oppo BDP-105D, Denon AVRX7200, Artcoustic Spitfire Subs, SL 8-4 (fronts) , SL4-2 (rears/sides), SL4-2 (4 ceiling)