Ethernet Cables - what are you using and why?

Thanks for all the suggestions everyone. Interesting that some people claim very small changes (as in, Ethernet should be the last upgrade in the chain) while others seem to find it more substantial. 

I'll read up on some of the options presented and see what catches my eye.

I use Furutech Lan-8 NCF. Incredible value. I have a lot of different (much more expensive) cables from this manufacturer, and I've heard it's often a good idea to follow what you already have in the system. For example, the top Transparent LAN may not be the best choice if you don't have other Transparent cables to match. 

For very little money, the Supra Cat 8 cable is a steal and a very very good cord.....I recently purchased an Audioquest Vodka ethernet cable on sale at Axpona, and there is a difference.....but not as big as I thought. Suspecting it may need more break in time

I use an eno Streaming Cable from Network Acoustics between their eno Ethernet filter and my Roon Nucleus Rev B music server. 

Melco C100 ethernet cable. It was a large step up from the Nordost Heimdall 2 ethernet, at 1/5th the price.

It uses a floating ground at one end, to drain noise away from the source component. So its directional and using it in the wrong direction is very audible.