Neutrik X series connectors (black are nice) and cable like Belden's 8412 would be good. Lately I've ended up inheriting a few more 50-footers than I need, and they were decent cable, so I cut them up into short cables. I think they were Rapco or Proco or VTG.
Gotham's GAC-2 cable is really nice (very flexible, and rugged enough for most things). I've got one still that I built over ten years ago. I want to
build some more of those sometime, but their cable is hard to get in the States.
Belden 8402 with Switchraft A series conectors would be absolutely indestructible if you need that, but most of us don't. 8412 should suffice, and it's black too (8402 is brown).
Cable with a braided
shield is better than one that's just spiral-wrapped, but it's also inherently less flexible. This is better for the shielding if it's prone to being beaten up. Tougher jackets and larger conductors are also good (8412 and 8402 are 20
AWG, I believe).
It's not so much to do with picking the best cable as it is not picking poorly-built cable. If it's decent, and you crank down the
strain relief well (so it actually does something(!)), it should survive pretty well.
Another trick is to not strip the outer
jacket back super far. With keeping everything clean in there, that means that even without
strain relief, it's still almost impossible for the wires to short to each other if you twist the cable.
It's kind of like riding a bike. It takes a while to get the hang of it, but once you've got it, you've got it for good.