I just wanted to thank GBT-MatthewH and and other users here for enabling me to decide on an Aorus board to pair with my 3700X.
I chose the Elite for budget reasons as I also changed up to a new case, PSU and RAM so didn't want to spend too much more. One thing I was checking on was the initially reported PCH fan noise issue but that seems to have been resolved in fairly short order. I had just finished the majority of the build today after successful POST the day before. That was actually the best initial power up I've had for a while, I sometimes mix up the polarity on the power switch and drive LED for one thing.
Today I was having some issues with the RAM settings, I bought a 16GB 3200 Corsair kit that was on the QVL but it seemed to want to stay on 2133 rather than 3200 despite selecting XMP and having the sticks in the preferred slots. I hadn't yet upgraded the BIOS as I hadn't noticed any excessive fan noise but I think doing an update was an option mentioned here so I tried it. Perhaps there was something I missed but certainly after the update to F4g the memory setting seems to have stuck, although I did note a post here about losing memory settings after a cold start.
I was initially planning to spread out my buying of parts but a combination of impatience and suspicion that there'd be a run on some of the parts meant that I bought the CPU and mainboard almost at the same time. As it turns out the local supplier still has plenty of the 3700X but now only 2 of the mainboard I chose. I was also looking at a 6-day wait on the RAM from these guys, thankfully the alternate source got them to me much quicker [slightly higher cost but they do free shipping].
I've added the Gigabyte 1TB SSD to the wishlist but it's not a priority right now. I'd also like to make use of the internal USB3.2 header to bring out a USB-C port to the front, so far the best option I've found is one of these;
EZDIY-FAB 2-Port USB3.0 Type A + USB3.1 Type C GEN 2-5.25 inch Front Panel USB
I'm making use of work ESD space and idle time but I'll soon be able to bring in my current box, swap some components and copy data and then take home the shiny new box for more software installation [and figure out selling the old box and hopefully get a bit of cash back].