I’ve read an underwhelming experience from a Starlight 8 USB owner on another forum. After comparing the spec sheet, I found the Starlight 8 to be very similar to the lower range Ultraviolet which I also have. The only difference between the two cables is the higher silver clad content on copper. The Platinum uses solid silver conductor unlike all other USB cables which use copper with silver cladding. The plugs of the Platinum are also higher quality carbon fibre. The plugs on the cheaper WW USB cables are plastic if I’m not mistaken.
In summary, I haven’t made the comparison but believe the Platinum Starlight 8 is the one to get if looking to hear a worthwhile difference or improvement. In my experience, I find little to zero difference between cheap freebie cables up to Ultraviolet. Minor difference with Tellurium Q Ultra Silver. The Platinum Starlight 8 brought a worthwhile difference to the system and to me, it's not subtle.