14 phase VRM, 12 for CPU, 2 for memory it looks like. Which is probably overkill, so that's good. Long list of features. ASROCK's BIOS has gotten a lot better, but still not quite as good as ASUS's if you ask me. In terms of power delivery it's probably better than the strix. All professinal reviews are good. Yeah it looks like a very good board.
PCPartpicker doesn't have a lot of options but here are a couple I could find.
Excellent PSU reviewed very well:
https://au.pcpartpicker.com/product/Rp8H99/corsair-power-supply-cp9020091na
Cheaper but still high quality: https://au.pcpartpicker.com/product/PVzZxr/corsair-txm-gold-650w-80-gold-certified-semi-modular-atx-power-supply-cp-9020132-na