I agree with the above post, Ethernet cable differences are there but it's very subtle stuff and you need the right system to stand a chance of hearing something at all.
However a good Ethernet switch between your bog standard router and your system can make significant improvements relative to Ethernet cabling. Then further down the line if you want to go deep in an Ethernet cable you only need a good short one for the last connection.
I recommend uptone audio Etherregen, you can try it on 30 day terms if you don't like it it's going to cost you return postage. $660 thereabouts, I put a linear power supply on mine and got another good jump in SQ.
However a good Ethernet switch between your bog standard router and your system can make significant improvements relative to Ethernet cabling. Then further down the line if you want to go deep in an Ethernet cable you only need a good short one for the last connection.
I recommend uptone audio Etherregen, you can try it on 30 day terms if you don't like it it's going to cost you return postage. $660 thereabouts, I put a linear power supply on mine and got another good jump in SQ.