Phono cables

I'm interested in trying some different phono cables but not sure what. I made a big change to my system recently and am now getting phono hum with many cables I have here except for Aural Thrills. Same turntable/ cartridge, but now hooked into a Luxman 590 axII integrated with built in phono stage. I had all separates before including a phono amp. I've tried several different Discovery cables, Cardas Golden Reference, a VPI phono cable, and some inexpensive Monster Cables. All produced hum. I might add, the hum came on only when the needle was placed on the record. Does anyone know what the Aural Thrills has or doesn't have in its makeup that cancels the hum? Any other product that is made similarly? It's not that I am unhappy with the sound from Aural Thrills, I just want to try some others for comparison. I don't want to just randomly buy cables and end up with hum again. I did already try several hum remedies that most are familiar with, i.e. cheater plugs, separate grounding wires to everything, moving components and wires around.