Help with upgrading speaker cables

Relatively thick Ohno continous copper crystal, also called long crystal copper Zip cord. It is nuetral and not a dollar per foot it is about $5-7. It con be found from many sources do a search. I think Moon audio and certainly Neotech amongst many others. It may not be what you want nuetrality can be shockingly different than your reference system sound.

Yes a cable can make your sound worse. Absolutely, some cables are just a poor match.
'BTW how much do those Synergistic cables you like cost. Please be honest I would like to try them if they aren't real expensive. Please don't ask what expensive is because it depends on how much money I have at any given time.