Anyone use these guys before? https://cablemod.com/ Only found the company thanks to a Custom PC article. Bought the SE-Series full cable set replacement for my Seasonic PSU and they're a wonderful quality. I did have an issue with a frayed motherboard cable but after I got in touch they offered a no quibble replacement direct from the factory in China! Just provided a few photos of the problem and the packaging barcode including the original invoice. Shouldn't have been wrong in the first place but it does build confidence in the brand that they acted so quickly to put things right! I've used all sorts of solutions in the past from Alchemy cable extensions to the horrendous Corsair braided cables that felt like cheap nylon. Really is so much easier to cable tidy these CableMod cables in comparison to the bulky set shipped with the PSU. Got my recommendation anyways!
I've seen them about a fair bit. BT gave them a good review, 4 years ago it seems! I think they're also the fellas behind the new builds.gg website.