Real answer.
All the wire makes a difference, and once you start you'll end up replacing it all. A $5000 power cord isn't necessary, and some $5000 cords sell new for a fraction of that...and I mean liquidation prices.
You can get excellent results in a range of $200-$700 (I know it's wide). Look for used cabling, and take a serious look at the lesser known fabricators selling cords at auction. You can find some really good stuff there.
