PS Audio P300 or Cardas Golden Reference?


Hi,
Currently I'm using REGA Jupiter, KRC, FBP600, and Celestion A3. I'm thinking about upgrading my interconnector between pre and power or PS Audio power generator P300 (or 500) Which upgrade will be noticable or effective for the amount of money? I think both will be around $500. P300 can be benefical for both KRC and Rega. Please direct me. Thanks.
esmdynamics
What is wrong with Cardas? I have a pair I'm trying right now and they seem pretty good to me.
Krell components don't appreciate being plugged into power conditioners or regenerators. The sonics will suffer..low level information, transparncy, dynamics, slam etc.. For a cheap but exceeptional IC try a pair of Monster Cable Z Reference Balanced IC's (about $200/pair). I demo's them with my Evo rig against my MIT Oracle V2.2 IC's and it was darn hard to tell the difference!
I think I've tried every power conditioner out there. They all made my system worse...yes, they change the sound and it sounds different, but don't confuse different with better.
I would normally say go with the Cardas GR as I have my system wired with them. But one set really won't give you the noticeable improvemant that a cleaner power will. I would start with the power and then add the Cardas GRs as budget permits. One positive about the Cardas GR's is that here on AG they seem to hold thier value. One other suggestion is conatct the Cable Company about their Cable lending Library. That was how I narrowed it down to the GR's for my system. Try a few brands and models and see if you hear the obvious choice for your system.