Ethernet cables

I’m of the opinion given what I’ve read that Ethernet cables, along with everything else in the streaming chain, can make a significant difference in ultimate streaming performance (please those who think it’s just 1s and 0s please stay out of this).  Due to this I bought a Wireworld Starlight 8 Ethernet cable because it seems much better than generic cables but certainly far short of the higher $$$ Ethernet cables (the WW platinum would be an obvious case in point).  My question is, with the Starlight 8 how much good can I expect over lower-priced or generic Ethernet cables and how much more performance can I expect from stepping up to better Ethernet cables?  Please be specific if you’ve directly A/Bed the Starlight 8 versus better cables as that’d be very useful and helpful info.  Thanks!