Kzhtoo - I wrote this really long response and decided it was waaaay to long. So, here's my (somewhat) abridged version.
Start with your source. Your system will never reach it's potential unless you can feed it the right "stuff" played through the best front-end you can afford.
Second, the speaker cables were Stiltech LS-100 G3, which I came to after a lot of experimenting. (Thanks Cable Co! Note, I have no affiliation with them.) My power cords for the front-end were Audience powerChords and for the amp it was a Synergistic A/C Master Coupler. (I ran a Shunyata Black Mamba to my Sony SCD777-ES CD player. I also had an Immedia RMP-1 table and RPM arm with Lyra Helikon cart.)
When I began my upgrade (binge) I started with my speakers going from Audio Physic Spark III to Sonics Amerigo. (Both are easy to drive.) Then, I replaced my PS Audio with the Running Springs Dmitri. If you don't need as many outlets you could try the Haley or, if not quite as much performance, the Elgar.
Then I went through all my other stuff. Big upgrades to my font-end; dropped the CD player. Finally, all my cables--speaker, interconnect, power cords--are Spiral Groove.
I know they guys at Spiral Groove and they were developing a line of cables. It's the same cables they use in their electronics and the Sonics/Canalis speakers (they partner with Joachim Gerhard). It wasn't a difficult choice once I heard it in my system. The bummer is that it's not easy to produce on a large scale, so they've been holding off going to market with them. That way, they can focus on their tables, arms, speakers (they partner with Joachim Gerhard on the Sonics and now Canalis line) and vibration control systems. Otherwise, I would whole-heartedly recommend them to you.
So there you go...my recommendations:
1. Source and front-end
2. Running Springs for power conditioner (PC)
3. Cable Co for finding the right cables for YOUR system
Sorry, Mr OP if I hijacked things. Hope this helped too.