Celerity HDMI-HDMI cable
So, I know these have been mentioned occasionally, just wanted to give my experience so far. Brought two 50ft versions of these from MyCableMart, the price delivered works out to around $213 a cable which is a far cry from the $300-350 that is usually being charged. I technically needed a 35ft and a 50ft but it only worked out about $3 cheaper due to the bulk pricing discount you get from 2+ of the *same* item, so just got two 50's because who doesn't want an extra 15ft for $3! Also, if you have other cables to buy you could potentially end up with free shipping, bringing the price down to around $208 per 50ft cable in quantities of 2+
I've tested one of them between my Sony STR-DN1040 A/V Receiver and my Samsung UN50F6400 TV (so only 1080p) and so far no issues at all, even using ARC although at the moment HDMI-CEC didn't turn on the receiver like it normally does. I have a theory on that though and that's because I powered the receive end (TV) from the TV itself, that doesn't start power until the TV is on, at which point the HDMI-CEC message has probably already been missed so going to test from a separate USB power supply, in fact I intend on using two original Apple USB power supplies since they seem to be some of the most stable. It's unclear if you have to power the transmit end although it has provisions for it, I may just do it anyway.
This is ultimately going to be for a projector but ironically I found out the pain some of you guys suffer with subwoofer hum. With the AVR and TV turned off (and the sub had long since auto-off), *as soon* as I unplugged the HDMI cable between the AVR and TV the sub switched on and started humming! Even with the Celerity plugged in it didn't stop, not surprising really since each end is electrically isolated. The good news is, as soon as the AVR turned on, the hum stopped.
Now, unfortunately I don't have any 4K/4:4:4/HDR/Deep Colour/Blah Blah Blah equipment to test with however, if anyone in the San Antonio, TX area does and wants me to pop over with the cable, I'm happy to try before these get put in the walls.