All you need is Certified High Speed HDMI cables from a reputable dealer/mfr such as Monoprice, MediaBridge, or BlueJeans. Just make sure the certification is for the length of cable you buy. Certified cables are tested for a particular length to insure that they meet the HDMI specs. However, those specs cover more than is currently available in consumer products (such as ethernet, there are no consumer devices that can use ethernet over HDMI yet) so you're buying for the "future". If you think you need ARC, make sure that your devices are ARC capable (receiver and tv).