Bulk power cables suggestions

I will second melm's suggestion of the Viborg 1606, combined with the top of the line Viborg plugs, either unplated or with the plating of your choice depending on your subjective listening preferences. I used the unplated copper versions as I wanted the most neutral presentation. 

Also had the cable and connectors cryoed at minimal cost. 

Have used DH Labs in the past, as well as JPS Labs in-wall and the DIY Viborg's I have now are in another league altogether and noticeably better. 

When I was building the Viborg's I loaned out a DIY JPS Labs terminated with the budget ($25 pair male & IEC) Viborg unplated copper connectors to a friend of mine with a much better system and he thought the DIY JPS/Viborg combo sounded very similar or equal to a Nordost Brahma that he was using. He felt a bit sheepish about that as the Brahma was about $1200 vs. about $100 that I had into the JPS that I loaned him. 

The Viborgs that I've built are much better than that IMO. 

Any 10 - 12 awg copper cable costing no more than about $10 will do perfectly.

There will be absolutely no difference to the sound unless your cable is extremely underrated, and with a 10 -12 awg copper cable that will NEVER be the case. And even then, you will not notice any sound degradation but simply a hot running cable, which may be dangerous.

I suggest Ramm Amadeus 5 MKII for hot and neutral and a counter rotating earth wire around the cable, and combine them with pure copper Viborg plugs (for example VE512R) with the plating that you prefer (gold,rhodium, pure copper). That gives you 11 AWG of high quality OCC copper in an air dielektricum with tellurium copper connectors and the performance of a 1000+ dollar cable. 

Have you actually tried any aftermarket power cables @cakyol ?