We all know and can't dispute that SR and other uber expensive cables can do magic with your systems however most of us aspiring audiophiles simply can't afford them.
Ted Denney is a victim of his own success. Thirty plus years building the worlds greatest wires and all it seems to have gotten him, well aside from a pretty darn nice lifestyle, is an undeserved rep for making astronomically expensive wire.
When the truth is SR is the value leader. You answered your own question: find the $100 SR!
I started out in the 90's comparing all kinds of wire. Cardas, Wireworld, Audioquest, whole bunch of them. All across the price ranges. Been doing so off and on ever since. Started with a whole bunch of SR Looking Glass. Then Resolution Reference. CTS. Now Atmosphere. The hardest part about it is in your price range people tend not to think its even worth selling, on account of shipping becomes such a big part of the transaction. Or the selection would be huge. Because they sure sold a ton of it.
So basically SR makes it really simple: but the newest generation you can afford. No one else has such a long history of consistency across models and years but you can sure do this with SR. Interconnect, speaker cable, power cord, does not matter, same thing.
One thing, Active Shielding. Such a significant improvement that for years all their best used Active Shielding. A lot of guys don't want the extra cables and outlets. But its a great opportunity if you can find some, because unlike all other cables these can be hugely upgraded by replacing the diodes and caps and cheap circuit board in the AS power supply, either yourself or having Michael Spallone do it.
Speaking of DIY, when it comes to cables, don't waste your time. Sorry to offend those who think otherwise, they are what we un-PC types call "wrong". Been there, done that, wasted time and money, and heard lots who wasted even more. Whatever some DIYer wants you to spend on parts, spend it on any cable- not even SR, just any throw a dart at it cable- it will trounce the DIY. And the SR even more so.