Audioquest Diamond would be a good choice. If the price is too high, Purist and Crystal Cable are also very good.
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I have been using Wireworld Starlight with my Sony 4K TV and Oppo UDP-203. No issues with 4K handshake and PQ/AQ is the very best. The cable comes with locking plugs for very secure connection.
They are not cheap but one of the very few certified 4K spec cables available today.
Some may suggest that almost all HDMI cables are Made in China and rest is all marketing gimmick. I suggest you to buy couple of brands and let your ears and eyes guide you on the very best cable in your setup.