Help with speaker cable recommendations please


Hello and thanks for reading!

I have a Krell Vanguard integrated rated at 200W @ 8 ohms and 400 @ 4 ohms. My speakers are Sonus Faber Electa's rated at 8 ohms with a suggested amp rating between 80W and 200W. The speaker cables I am currently using are Audioquest Type 4, a 15 foot pair and I believe they are approximately 15 gauge. I purchased the cables terminated from a dealer for just $170. These cables were meant to be a stepping stone until finances permit me to upgrade, the thing is, these cables sound great to me! What might I be missing out on with these cables vs something that would be a better fit for my system? I purchased these "stater cables" based on recommendations and reviews I have read. What cables would be the next logical upgrade in your opinion that are friendly on the wallet and make a significant improvement in SQ?

Thanks for your help!

grm
grm
Agree with @stringreen 
if what you have sounds good to you, save your money. Don’t try to fix something that isn’t broken 
I have purchased an early version of the Bionic cables at about 1k they are a great value, hitting above the purchase price. They are very resolving, great staging & placement, w/excellent tonal balance. The Bionics were at least as good as I recall the Mosaic Chimera cables I heard some years ago .. which were the best (wow!) I had the chance to personally audition prior to this.
Not reading all the numerous posts here I sure my fellow experienced A'goners have stated the disclaimer "Of course at the minimum you have to have a certain level of system quality to take advantage of & hear the distinctions of quantum type changes" (referencing entry level big box store electronics vs upper mid to high level components).

I a-b'd the Bionics against AQ emeralds (my previous cable), Shunyata Delta (well balanced performance, just not to the level of Bionic), a small boutique Texas cable maker (name un.recalled) w/a thin minimalist design, & Darwin Cables Silver (beautiful mids & uppers).

All were big improvements over my AQ's. But if you get the opportunity to audition Bionic cables I believe you will be pleased & perhaps quite surprised at the level of performance.
Sorry, in my search I thought the topic was IC, my apology for crashing the topic!