Cheapest but good cables….

The Micca cables Lak mentions in the above referenced thread are worth try.

I've been running a 6' pair at the computer since mid October, 2022.

It's not a high end  system, but it's a nice sounding nearfield setup.

I've used Kimber 4VS and 4TC speaker cable with the same components in the past and prefer the inexpensive Micca cable.

This was older Kimber (Gray/Black and Blue/Black - I think).

I purchased a 12' pair to try in the living room system, but have to add binding posts to the speaker cabinets before doing so (I currently use 47 Labs OTA cable soldered directly to wide band single drivers).

DeKay

Nordost for flat cables but 12ft might be more than you want to part with, if so maybe AudioQuest. Canare for interconnects which BlueJeans sells. If you can keep your speaker cables above the carpet, Canare is a good choice. 

Here, you can buy 100M of an unterminated flat cable.

https://www.aliexpress.us/item/3256804705840934.html?spm=a2g0o.store_pc_promotion.promoteWysiwyg_6000378480293.1&gatewayAdapt=glo2usa4itemAdapt&_randl_shipto=US

According to an established member here who’s compared this to higher $$$ cables this is very good…

https://www.amazon.com/dp/B06ZZ5HCTM?ref=ppx_yo2ov_dt_b_product_details&amp&th=1

+1 dekay