The Cat6 at the TV's is for fallback, just in case there are any issues with HDMI. I haven't seen any, but who knows, so I want the backup. I'll also run a couple RG6QS as backup-backup (and direct RF input I suppose).
HDMI to Cat-5 converters (not typically 'baluns') require 2 pieces of cat-5 on every single unit I've seen. This includes Extron, Monoprice, and Geffen (that I've seen). I've also had 'flaky' results with every one that I've used at some level. DirecTV would not work for me going through a HDMI->CAT-5 converter through a 5x1 Monoprice switch, but DID work if I sent it through a Geffen scaler first. No idea why! Panasonic BD-50 worked fine going straight through the switcher to the converter. What I really learned is that at a most basic level, HDMI can be unpredictably flaky. On the other hand, after 4 years in my home distributing HDTV over component video, I've had a total of ZERO issues, other than my matrix switcher being very out of date. So, I got a new one for $300 on eBay. That's 8 zones of component HD video with up to 8 HD component video sources, along with digital audio (coaxial) that can be sent anywhere I want. The HDMI equivalent is about $5,000 right now.
So what specifically won't I be able to accomplish with this setup? I've done a lot of research into the "closed systems", but I haven't seen anything except much higher costs, proprietary wiring, and no DIY (and often a minimal ability to start small and build over time). I'm curious what I am going to be unable to do with the setup I've described? Even if the HDMI runs fail, I have the Cat6 as a backup.
I think you have some good and some bad information. What you are describing to use is a 'closed' system. That is, you are picking a brand and using it for all of your needs. Crestron/AMX are control systems. They have IR/serial/IO/Relay controls built in, and offer (virtually) unlimited expandability. For price, they are expensive if you buy new, but right now, do a search for Crestron on eBay and see what you get...
It's worth noting that Crestron does something like 50 million a year in business, 25 million of that is residential. They aren't just a here today, gone tomorrow company. Of course, neither is AMX, Elan, Control 4, or URC. All of these companies have developed their own control systems (remote controls) which you can use to customize your home setup.
Keep in mind what I said before - I use a URC MX-850, and I use it with Crestron directly. It certainly isn't a 'closed' system. What do I use that's Crestron? Well, they have some really good matrix pre-amps for stereo rooms, so I use them. I also work for dealers, so I have an XM tuner with free service right now - gotta use that, and a couple of FM tuners, which I got for free. But, the concept is not really much different... I use CAT-5 for the wiring, not at all proprietary. My wireless touchpanel is wi-fi, pretty standard right? You can build a web interface you can hit from any computer. Likewise, I can hit my home system online from anywhere if I want to. The rest of my components are just like what others get... Pioneer plasma, Panasonic projector, Yamaha receiver, Sonance & Rotel amps, PS3, Wii, Extron, etc.
Now, are they harder to program? In many ways, yes, but in many ways no. PM me for info if you want, but everything can be had. Yahoo has some decent forums to help people who want to try out with things as well. But, 'closed' is kind of the wrong way to think of it. Tougher? Yeah, I would say the first steps aren't as easy, but there is nothing in this world that I've seen that is easier to use or more reliable.
As I see it, I'm basically just moving what would normally be in each room to a central location, and just connecting via HDMI (via HDMI cable or Cat6 baluns). Just like when I have equipment in each room, everything connects to the AVR, then the AVR connects to the TV with one cable, and to the speakers. I'm simply moving the local equipment to a central location.
Right? Or am I totally missing something?
Here are some concepts...
1. You have a single piece of gear that distributes video, and to conserve power you want to turn it on only when it is needed. Does the control you have do this? Is it possible? I mean, it can turn it on when one room needs it as part of the start up for that device, but when you shut off that room, what if another room is using it? Can you have smart logic to handle counting of devices?
2. What if you have the same scenario, but when you turn something off in one room, you want to turn it on in another room and continue playback. Can you set timers for 60 second turn off - or 3 minute turn off? So devices stay on for a while after rooms are done using them?
3. What if you have a speakers you want to match to another room (kitchen speakers to match audio in adjoining TV room)? Can you set it up with a single button that will see what is on in the TV room so it is automatically turned on in the kitchen?
4. What about party modes where you pick one source and can send it to all rooms with the press of a single button?
5. What about shutting all rooms off in your home with the touch of a button?
6. What about automating tasks such as turning lights on/off at specific times, or raising/lower shades?
7. What about true serial control with feedback that you can setup and change yourself? This may be possible with the URC piece, I'm not sure, but if you aren't writing the module, and it doesn't do what you want, then how do you change it to make it do what you want?
8. What about customization beyond what is in the box? For example, I use a 400 disc DVD changer. I've loaded all the cover art (manually - a long process) and the touchpanel shows the covers for all the movies I have. I just press a movie cover and it starts playback automatically... How easy would this be with a URC?
Don't get me wrong, I've used URC plenty, but I've also picked up Crestron gear on eBay and have sold it in my installations for less than cost of the product new. So, the difference in price can actually be less than many people expect. The biggest plus is for audio only rooms. No RF remotes, just a hard wired 12-button keypad in each room. I press the XM button and XM comes on in the room, press the FM button and stereo comes on. Both cable boxes, the Apple TV, DVD, etc. is all available with a single button press, and most of all - my son, at 2 years old, knew how to turn on music and I didn't worry about him 'breaking' my expensive A/V gear. It truly is a zero learning curve product when installed.
Now, this is where I haven't seen URC match Crestron/AMX, but I sure as heck have used their remotes in my home because I like the feel of them, and as I said, the MX-850 integrates seamlessly.
Oh - don't forget - conduit.