Threshold S/500 II power cord suggestions?

I guess it really depends on what your trying to change.There are many cords that'll work. I used a Discovery cord on my S/300 and it added a touch of warmth and worked real well. If you want to stay neutral with plenty of slam I would suggest the VH Audio flavor 4 cords.
Good Luck , I do have a 2 meter Discovery cord if you wish to try it.It is a touch warm though and it may or maynot be what your looking for...Goog Luck

How reasonable is reasonable? If you are handy with an iron, you may want to try one of the kits from Chris VenHaus at VenHaus audio, Ernie Menier (plug ernie into the Audiogon search feature) or cryoparts.

Unsound-I have a Xindak FP-Gold powercord I used on my Threshold.
It really made it sound like a more powerful amp.
Improved bass was the best part.
Xindak makes very good cables at different price rangers.The FP Gold goes for $150 with $10 shipping.
Check out www.nysound.com for the best prices and 3 day shipping from China.
Knowing you though,you may not want to buy from China.But I dont mind.

Thanks for all the responses.
Thorman I'm troubled by a kind of ghosting,ringing unwanted harmonic that it is especially noticiable right smack in the middle of the treble region. This amps seems to be very sensitive to cable connections and such.
Viridian, I will look into VenHaus and Menier, thanks.
David, lest anyone get the wrong idea, the note book I'm keying this on was made in China. I was once burnt on some investments I made in Canada. Since then I prefer to do businees with companies that have a legal presence in the USA.