I've tried many different cables from Monster/Audioquest to Marigo Audio. I like Marigo Audio cables the most. While being very transparent and detailed they have the analog like sound (warm) without being analytical (something I don't like). The older designs had some advantages as well as drawbacks. Apparition 2 was the most open in upeer midrange (though I didn't like the way BNC version sound with BNC-RCA adapters). 5.7 was very nice cable with tremendous amount of bass. The original Apparition Reference reminded me the sound of reel to reel players back from my childhood.
I also use Glass toslink cable purchased from ebay as a reference point (very good value for the money).