SoundTools SuperCAT Professional Grade Shielded CAT5e Cable etherCON (150 feet, Purple)

These are decent. Much better than Thomman ones. But the Van Dam shielded cat5 is even more flexible - truly comparable to a good mic cable. Check out Designacable in UK.

Flexible. Lays flat and coils like you’d expect.

Built to specs. Feels great. Rolls and unrolls perfectly. Not stiff and kink prone like a standard cat5. The ethercon ends are grounded properly, so no more interference and connection dropping when someone touches, steps on, or bumps the cable when used as AES50 interconnect with my x32 mixer and SD stage boxes.

Great cable, flexible!

SuperCat is the gold standard for CAT-5 cable in pro audio for mission-critical applications. There are many less expensive options if you’re willing to sacrifice quality and reliability, but this is the best.