Buy cheap cables........ get cheap sound.
Cables and cases seem to be the area where many part-timers want to cut costs. DON'T.....! You don't have to buy boutique cables, with oxygen-free silver, etc., but don't use the cheapest you think you can get away with, Buy the most expensive you think you can get away with (with a lifetime warrantee).
Troubleshooting a poorly grounded cable or intermittent cable is VERY difficult for the average player, and can produce some very puzzling problems, and unsatisfactory gigs, for you AND your clients.
Don't cheat yourself......
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An arranger is just a tool. What matters is what you build with it..!