Thanks for sharing your experience with the x470gt8. For me the killing feature of that board is to be able to use your "old" cooling system (I have a zalman reserator 3 MAX), this is saving me some money I can spend in other parts, and if this thing can cool my old FX cpu, I'm sure It can cool whatever ryzen I put on It because Ryzen is more power efficient (my FX consumes 125W).
Apart from that, I have here a 3200Mhz kit from Ballistix (crucial - micron), and It's nice to read that I could be able to run It at almost max speed... when using two of them. I really doubt I can get the 3200Mhz when running four of them, although mines are single rank (usually provides better result), let's see as I have them and I have no motherboard where to try them.
The hardware is impressive, It's even an intel NIC included, really hard to see nowadays where everyone install these cheap realtek solutions. Here I can find It for 177€ (I'm living in Europe, alternate has It at that price), I want to give It a try...