DIY AC cable...which bulk cable?

Closely related to this topics and some have touched the subject: which are the best AC plugs under $250? I would like also to know about the best wall socket under $250 but there is a long outstanding thread (a bit idling at the moment) on that one.

Why $250.00?

You may like the $45.00 Furutech plug ends.
I did, that is until I tried the plugs further up the line, though they weren't quite $250 a piece,I did need two and so will you.
And for the extra money there was an improvemnt in the sound and the build of the better plugs is also much better, steel housing compared to thin plastic.

I have used 4 different wall sockets- hospital grade Hubbels which is a nice place to start for well under your budget.
Still under your limit is the Shunyata RZ1, and I felt it was a bit of an improvemnt, perhaps the cryo treatment?
I also have used the FIM blue/gold receptacle, and this was great when I had solid state gear as it seemed to take a bit of the edge off.
Now I use the Furutech GTX D gold receptacle and can't find a thing to fault with it.

It's solid constuction, has a solid connection and delivers a solid sound, it doesn't colour the sound as far as I can tell, it just seems to let more energy into the gear as silly as that sounds.At the same time it does seem to offer a little less background hash behind the music and there's more force and speed, more decay after the notes trail off than I've noticed with other recptacles that I've used.
I believe this is still in your budget,and one area where I wouldn't scrimp.

I have found that sourcing the wall receptacle and the ends of the power cord from the same company and in the same price category works better than splurging on the IEC's and scrimping on the wall receptacle.
If I had to decide which way to go, it would be to spend the most money on the wall plug.

Having said that,I would assume you will also be running dedicated lines?
If not, make that your priority, and scrimp on the connectors if you have to.
Your budget of $250 to $500.00 should include the cost of running dedicated lines, and then spend waht's left on the plugs.

Lacee,

thanks for your comments. I mentioned $250 as I want not to exclude good alternatives. Which Furutech model would you recommend that has the best value in the upper end?
As a rule of thumb I never buy the most expensive ones, though IME the GTX-D(r) is my favorite for audio and SR TeslaPlex SE for home theater application. Per my system description, I have dedicated lines for all my systems.

I use the Oyaide P4/C4 which I find to have a very clean, clear sound though I am very curious to try the Furutech F1-50 too.

I purchased the Furutech FI 48 R because they were 25% off.
I think they are one step below the top model.
They are a good match to the Furutech rhodium top level IEC in the amps,the only connectors in the line from the panel.
That line is simple 10 guage solid core Romex, and a generic 20 amp breaker.

I've had good luck with Furutech, but there are other brands that would offer similar improvements over stock power cords.

I have long runs so I use romex.
If the distance from the panel to the gear was short I would improve on the wiring,but I think better connectors can improve cheap wire, whereas cheap connectors will compromise the expensive wires.