The Razer Core X Chroma comes with a 0.5m Thunderbolt 3 cable. There is nothing wrong with the length, but the build quality of the cable is questionable.
I tested it with three MacBook Pros and all three experience frequent disconnections from the eGPU. It can be as frequent as once every 30 minutes. It is extremely irritating. Upon Googling, it seems to be a common problem.
Energea FibraTough is one of Energea’s range of braided cables. They have various cables for different devices and usage. Since I am using iPhone 11 Pro Max, I got the Energea FibraTough USB-C to Lightning Cable.
It retails for S$29.90 and is available in five colors, Black, Red, Blue, Pink, and Turquoise.
The difference between Powerline II and Powerline+ II is just the exterior material of the cable. For Powerline+ II, the cable is braided with nylon. For Powerline II, the cable is made of Thermoplastic Elastomer (TPE). Both cables are still strengthened with bulletproof fiber.
Their 1m retails for S$6.49, 2m for S$7.79, 3m for S$10.49, 5m for S$12.79, 8m for S$19.49, 10m for S$21.99, 12m for S$32.69, 15m for S$38.39, and 20m for S$46.79. For my setup, I bought the 2m in length.