It really depends on cable length. For 3-6 feet any decent cable will do. For lengthier ultra HDMI certified (Blue Jeans and others mentioned) will be more solid choice. But from 20 feet and up - no copper wire will push "full 4K resolution", ie. 18Gbps. Only newest active fiber optics cable would work without Metra Gigabit Accelerator
I changed 2 monoprice Redmere and Audioquest Forest cables before I finally got full 4K to my projector via 50 feet HDMI - RUIPRO HDMI Fiber Cable. For more information -avsforum has huge thread dedicated to tests of HDMI cables throughput, guys did an amazing job measuring and comparing, an absolute impossibility in audiophile world.
I changed 2 monoprice Redmere and Audioquest Forest cables before I finally got full 4K to my projector via 50 feet HDMI - RUIPRO HDMI Fiber Cable. For more information -avsforum has huge thread dedicated to tests of HDMI cables throughput, guys did an amazing job measuring and comparing, an absolute impossibility in audiophile world.