Just use the cheapest HDMI cable you can find ;-) HDMI is a digital signal, so either it works or it doesn't. Everything else is a rip-off.

For example, use an Interdiscount cable for 9.95 for 4k60HZ.

HDMI 2.0 cables do not exist, as there is no difference between the cable and HDMI 1.4. Only the connections on the TV / console must be HDMI 2.0 capable.

So I use 3pcs of this cable. Once for the PS4Pro (works perfectly-4K60p) once for the iMac (output 4k60FPS top performance) and the third for the 4K player Panasonic UB900 (output 4K60p) I am very satisfied with the cable. But I really can't say whether it is already HDMI 2.0.