Zafvino Silver Dart Graphene vs. ?

I’d highly recommended trying these lightly-used AZ Holograms.  If they don’t blow you away you can sell them for little/no loss, but if they do you’ll save a bundle.

https://www.audiogon.com/listings/lisb77a9-acoustic-zen-hologram-ii-like-new-speaker

These speaker cables won't break the bank but sound very good after a break-in. There is also an audition period for possible returns. BTW; they are currently on sale: https://www.vogueaudio.com/product-page/silver-strand-speaker-cables

Of course, the components in your system will also have something to do with the mix.

+1 for Acoustic Zen. I recently installed their Satori model and it was an amazing upgrade. 

I can't answer your question specifically, but related to many suggestions already given, I am using Acoustic Zen Absolute speaker cables yet Silver Dart power cords. No, I don't have a good answer why it ended up like that, but I am in no hurry to make any changes based on the sound quality I am getting. I imagine the Silver Dart speaker cables and IC's sound just as good, but I haven't compared. 

Question to @ozzy though, I am seeing a large number of used AQ dragon's; not just here but in other classifieds as well- I wonder if all are legit/non-counterfeit? At this price level there must be plenty of incentive for knockoffs to flood the market. Have you/anyone else heard of anyone getting a counterfeit?  

I have been using the Goertz MI-3 Divinity cable and thus far, pretty impressed. Adds a lot of bass and a quietness to the sound. And will fit your budget nicely. Next, I'm going to try the bi-wire version.

ozzy