For line level signals almost any screened cable will do a good enough job over short distances (shall we say up to 10 feet because that's all I ever need).

I had a few years of making my own cables. Almost all fail because the jack plugs gradually get "Loose" due to the riveted style of construction. I tried more expensive jack plugs which were held together with screws and small nuts, but the nuts come loose instead. Result - I now use bargain basement leads with moulded on jacks. I can't buy the parts cheaper. I carry a couple of spares to cope with my current failure rate of about one per annum. I use 10 of these type of cables for submix and then the feed to the main desk, all unbalanced. I replace when the failure rate goes up, total cost usually less than one pound sterling per cable.

Nevertheless for low level unbalanced signals such as guitars I'm sure there will be some difference between cheap and expensive cables, especially with long cables and bad versus good screening, so I could understand that. As I'm not a guitarist I can't comment any further, I'm talking as home electronics person here!