Uptone EtherRegen or Gigafoil v4???

I haven’t used the ER, but I can definitely vouch for the Gigafoil in my system. When you can get an audible improvement for $500, I’d say that is a good deal.  Does it “blow me away” or “sound like a totally new system?” Of course not. But it is an audible improvement.  I have generic CAT6 from the wall to the Gigafoil, then generic CAT7 from the Gigafoil to my MSB Discrete DAC.  I am thinking of putting in a ENO Ethernet cable from the Gigafoil to the DAC, but curious as to whether there would really be an audible difference there . . .?

On another thread, folks are raving about the ViaBlue cable and the ENO cable.  I wonder if replacing the short CAT7 run from the Gigafoil to the MSB Discrete DAC will actually make an audible difference.  The ViaBlue is about $100 and the ENO cable is $700.  Moreover, even if there is an audible difference, I wonder just how much of a difference there would/could be to justify forking over $700 for an Ethernet cable at the very end of the system?  Did you find that using a better than generic Ethernet cable actually made a difference in that short run?