This might be the most critical interconnect in your system. The reason - the signal generated by your cartridge is REALLY small (read millivolts), as opposed to an approximate 2 Volt signal coming from a CD player. Do not skimp on this particular interconnect.
You will want a good shielded interconnect. Phono pre-amps are very good at picking up RFI, and you don't want to hear that.
I actually tried a set of Transparent cables with my ScoutMaster, but I got a lot of hum from them. I switched to Audioquest Jaguar or Cheetah (I can't remember. The one that costs $300/1meter) and the hum went away. I am actually hoping to upgrade this interconnect, too, when funds permit.
Cheers.