Best interconnects for audio research

I am looking to upgrade my interconnects. I currently have Audioquest python xlr's for both amp to preamp and preamp to cd. Various people have suggested cables such as Transparent Ultra, Kimber Select 1130, Tara Labs 'the one' and Audioquest Amazon. I would rather keep cost below 1K per 1M run of IC's(used that is). I would be grateful for any input you guys have on this matter.
My system:
Nottingham spacedeck/arm
Grado Master
ARC PH3SE
ARC CD2
ARC LS-15
ARC D-130
Audioquest Python IC's
Kimber Monocle X speaker cable
Proac 1SC

Thanks, Mark