What type of cables make the most difference

@douglas_schroeder you are quite correct- my question is motivated by a sincere desire to discover- and to be even more specific, to gain insights to perceptions. 

@zavato 

You are right. Your system is highly resolving with excellent speakers and electronics.

I have always used "World's Best Cables" they are made in Japan with tight manufacturing standards. They are inexpensive and do the job without acting like antennas and don't impart a signature on the system - they allow it to speak for itself and be as transparent and clear as it can be.

@audphile1 not a trick question- I’m not interested in any cable hierarchy but just interested in people’s subjective opinion based on their own experience. 

@zavato if you’re ok with completely unreliable answers, and were just looking to chat, cool…you got the answers. Good luck making heads or tails of what’s been posted as experience. Lol

I have followed this thread with great interest.  I thought I would chime in as this is an exceedingly timely question for me. 

I would note, Up until about two weeks ago I had my speakers and components on different walls requiring 60 feet of speaker cable.  A couple of the (non-obnoxious) cable threads made me reconsider my physical set up.  Now everything is on one wall and my speaker cable is not 2 meters.  Same mediocre brand but basically 54ish feet shorter.  I think there was a decent change in the quality of the music coming from my speakers.  I think that helped.

At the same time, prior to this change I engaged with an online retailer with a very large cable library (again, I apologize not sure if we can or cannot name and I have no interest in running a foul of the rules.  

I have received three digital cables to try between my DAC and streamer.  We started here because speaker cables at 60 feet would have been ridiculous.  However, I now wonder - should I pause on the three digital cables and pivot to the speaker cables - again, directly to your point - what is my biggest bang for my buck?

I don't know.  I do know, I am not prepared to go down the power cable path just yet.  I want to complete my interconnects and speaker cables before I go there.  And even before that - I want to have a dedicated plug and line run for my outlet.  

What I might offer - someone had suggested a change from Ethernet to fiber when plugging into my streamer.  The three components were:  10Gtek Fiber Patch Cable, 10Gtek 1.25G SFP Transceiver 1000Base-LX, and TP-Link MC220L.  All in for those three items was less than $80.  I felt a significant difference in the sound quality of my streaming.  

I look forward to the comments from others.  A number of people who have already commented have been very influential in helping me think through this cable/audio journey and I am appreciative.