Finished my build:
Ryzen 1700
ASRock X370 Killer SLI/AC
TridentZ 3200C16D-32GTZA (2x16GB)
Noctua U14S
I'm not able to get the RAM to boot above 2133 with the stock BIOS. I purchased it prior to the Ryzen release, 32GB for $185 at 3200 CL16 seemed like a good deal. It's dual rank, so I'm just going to wait for the BIOS issues to be resolved.
I did some quick CPU overclocking tests. Changed the voltage to 1.35 since that's the max I'm comfortable running at with the perf/watt of Ryzen. Was able to get it up to 3.9Ghz stable with prime/cinebench. 4Ghz was stable in Windows but crashed during burn in test. So I decided to go down to 3.8Ghz and see if I can lower the voltage to 1.30, which has been running stable so far. Stability is more important to me than getting the max possible OC.
This is the Cinebench MT result at 3.9Ghz with RAM at 2133Mhz.