Recommendations for fast sounding cables


I've recently acquired a SEP amp based on kt88's and while it presents well in many ways it lacks the speed of my push-pull and ss amps which is typical.  Thus I'm looking for some nice and well rounded sounding speaker cables (non-biwire) and interconnects (single-ended) that excel in speed, tempo, PRAT, whatever you wanna call it to try to get some of the head nodding and toe-tapping back.  Transparency, detail, open soundstage are basic requisites as well.  I would also consider maybe changing out my psu umbilical cord, usb, and digital coax.  I understand that this will likely involve some or all silver in the makeup of the cables, and while I like a lit-up sound- an overly bright anything will usually get quickly replaced.  The budget is not high at $100-$300 new or used but may make considerations for something exceptional that fits the bill. I've gathered that some of the following may work- please feel free to comment on those as well, but I would also like to get some more suggestions.  Thanks!

Mapleshade Double Helix
DH Labs Silver Sonic T-14
Signal Cable Silver Resolution
auralacrobatics
At your price point, I'd also suggest Amadi Maddie Signature, Darwin Silver or Darwin Ascension.  They are all silver cables and really transformed my system from good to very good.  They allow you to hear deeply into the mix with great detail but no harshness.  I used several of their cables in a second system after spending quite a bit more on my primary system.

Bob
I made a pair of new power mono blocks. That included hardwired speaker cables into the amps. 
(So I can't guarantee if the sound is because of the speaker wire or the new amplifiers.)

But immediately when I connected them I noticed that they were much "faster" then the old stuff.

The thing why I think it may be the speaker cables and why I don't know. Is that it were the first time I used silver. And I can't swap between different cables..

I built speaker cables with solid singel fine silver dead soft conductor. Withe cotton sleeve and a wowed shield and a copper foil shield. Around each conductor like chords top of the line speaker cable. 

The thing is that it is so easy to get used to it :)