That is an expensive PSU. Did you already buy it? The enp-7660b is the most popular flex PSU. Quiet and powerful. If you didn't, and don't necessarily need modular.
https://www.sfftec.com/product-page/enhance-600w-flex-atx
@SFFTEC has one that is painted black (if that matters to you at all), but it's also relatively affordable, Shipping times aren't the best(some people have commented about it on Reddit) but it's coming from a community member here who, I believe, also did the z-case p-50, or helped out with it I think.
https://smallformfactor.net/forum/t...lex-atx-silent-and-powerful-custom-psu.11896/
May be worth looking into, if you don't
need modular.
I believe you can get other modular ones cheaper too, but geeek has the most customizable options that are readily available (or at least quickly available... Compared to AliExpress or taobao)