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
I worked 3 years modifying a P300 and at one point also had Cardas Golden Ref. PK for every component. The P300 with MW2 will bring a bigger benefit to your system than one GR power cable. If you had them on everything? That is impossible to know without trying. I personally would buy a used PS soloist for the wall plug, and then make my own PKs from DIY parts from Parts Connection, Michael Percy, or Ebay. I just cannot shell out $300 for a used GR anymore.. I actually have sold off the ones that I did own (3).
Are you the guy that had the pics on the PSA forum detailing the mod? Do you still have it for sale?
http://gallery.me.com/theo224/100042

I did have that p300 for sale for awhile. I loaned it to a guy who had interest in buying, but decided not to sell. I put too much into it and wanted to keep it.

The gallery shows start to finish over four years..

I'm not sure if I am the guy in psaudio forum or not.. I posted some things at diyaudio...
you always start with the power. What comes out of the wall will impact your system sound the most. PS Audio P300 or P500 will be much noticeable upgrade than changing the interconnect. Clean power will impact your whole system whilst changing the interconnect is only partial.