I've found over the years that the house brand cables from reputable vendors, or boring sounding brands such as ProCo, are of good quality and hold up well. I've had ProCo cables last for decades.
But mostly I make my own cables. I like Switchcraft 280 plugs, but there are good Neutrik plugs too. A technical detail is that the "sleeve" of the plug, and the threaded body that accepts the cap, need to be machined out of a single continuous piece of metal, otherwise they will work loose from one another over time and form a bad connection. Also, those two brands of plugs have gotten the dimensions right over the years, and are the standard for everybody else. Switchcraft predates amplified music.
I like repairable cables. The main failure mode is that the center conductor breaks due to years of flexing, typically at the joint to the plug. You can get another decade out of a cable by cutting a couple inches off each end and re-attaching to the existing plugs, if you can get them apart.
About cable length, I prefer shorter cables just because they're easier to manage on stage, get tangled up less, and are less stuff to haul around. Now to reveal what a geek I am, I've got my cables color coded -- each type is a unique color, so I can see at a glance if I've got the right cables in my bag.
Nickel plating is amply conductive, and doesn't corrode. Gold can corrode because they use cheap thin plating and it's the metal underneath that corrodes.