You will never find it. Never. Unless you impedance match your equipment with your cables. The sound will otherwise never get across and everytime you change it you will only change your impedance so it sounds different, sometimes better, but never better enough. Start with the speaker cables you complain about. That makes the most difference, if your system is good enough. You will look ALOT and ask manufacturers ALOT and most manufacturers don't even know. I build mine, calculate them, and the sound is completely real in the listening room. Like every song is live. It blows everyone away. All the time.
Money Well spent
Cables , Interconnect Rca /Xlr & Power Not To metion Power conditioners ???? Is we all have a shopping bag of left over cables WHY many because always hoping for that new improvement that some thing extra My most $$ power cable a well know company VD i have retailed for 1,200. 00 back in 2017 Hi Fi award all that stuff you like a new Car of the year again . so who make s great cables & NO i Don't want Garden Hoses behind my audio rack that don't bend or are so heavy they have to tired up in order not pull down & fall out do i have to go on & on NO i don't think so i have NOT been BLOWN Away as of Yet just NOT satisfied Good News Is my Wallet is so thin it doesn't heart when i sit down G mann