power cables where do I start?


I want to see what a power cable(s) can do for my modest system.

I just dont know where to start as a brand or component.

Suggestions please.

Will look for used. Will be budget minded. 

Current system:
Rouge 99 preamp
Odyssey Stratos mono amps
Vandersteen 2ce with vander subs
Rega cd and Rega Dac
Rega RP1
Hero interconnects
mswobo
 Try to diy some powercables mede from 12awg solid core. It might open your eyes
I use hospital grade power cords ($20) and a Furman 15i power conditioner. It's all about clean power to protect your investment. 
To the original question, I would start with ...:
1) DAC
2) Pre-Amp
3) Amp
4) Transport or CD Player 
5) Turntable and/or Turntable Pre-Amp  
6) Power re-generator or conditioner  ( Yeah did that one also ) 

..and I agree with gdnrbob and went with ZU Mission cables. 
+1 on the Signal Cable Magic PC's being an decent, inexpensive upgrade from stock and being a reputable dealer. I've owned them for years and am just now looking to upgrade from there, starting with the dac.

+1 on the post from lak also.