Pretty much exactly what I have said too.
Everyone that I know that does what you do uses multiple smaller monitors for exactly the reasons you already do.
As I also have already said,waiting until you are sitting in your trailer to make these decisions is simply prudent from my experience and again I install these sets every day.
It also sounds like you have not yet tried this idea of yours on a bigger display?
I have 2 24" Dell IPS monitors sitting on my desk and right next to them is a 24" Samsung 1080P TV set that I can easily compare directly to the monitors.
As you point out they can each "Zoom" to be readable at some level but as I said and you added the pixel structure is clearly not similar at all. The TV output at these views is almost unreadable though in theory it sounds like a good idea.
Why not just buy a 32" computer Monitor and call it a day?
Well if you can,do!
The cutoff seems to be 27" and for practical reasons. Though the sets these days are for all intents multi scan monitors anyway a lot more goes into them than just the spec.
I like the 27" Samsung and they are at Sams Club for under $250.00 all the time. The problem though is that most 24" monitors look a lot better to most people in real world use.
The 27" Apple is amazing but 3 times the price,worth it but I would not put one in a trailer.
Then the cost and weight
just goes through the roof as you look to anything bigger.
So a TV seems a natural alternative and for browsing and graphics they are fine. For text and DB work they fall
flat and can be unusable.
A friend who is a Web Developer recently picked up a 32" Samsung TV as I suggested it as a TV,he didn't mention it would sit on his desk for work.
He ended up getting rid of it a week later and I found him 2 23" Apples instead and he could not be happier.
These sets are just not what they seem always.
I have a feeling you will realize as I already know that using a single big monitor will just not work as well as a few smaller ones in a tiny space like this.
On the other hand you seem clearly determined to do this the way you state now so good luck with your search.
As has been stated already,the sets do not have a lot in them anymore and are both cheaply made lightweight devices and have little inside for inertia to play with as long as securely mounted to the trailer.
I know that the better name brands may be made to a higher standard but they may also may not be and I would guess that they are more alike than different in construction these days?
might be better but I really don't think it will be a big deal with a solid mounting platform.
Backlight methods seem to have no part in toughness or reliability either and I would not qualify a purchase based on this either way.
If you do need that much TV and mount it in place I would look to mount it top and bottom in there and not just suspended from a Vesa mount bolt pattern. I would give it better support than that. I would also look inside and see exactly how it is constructed before attempting to decide how to mount it taking into account where the weight
and mounting points are and if they seem reinforced or not.
A lot of these units have the mount location in odd spots that makes me wonder how they ever decided where and how to locate them?
I installed 3 32" units Yesterday where the Vesa mount location caused the TV to See-Saw on the wall if you looked at them wrong? I need them to articulate from the wall and had to use much heavier duty mounts than usual for the weight
as the mount location just was not good for a stable install without an overkill mount. This of course can create its own problems too.
Friends of mine modify TVs for use in Prisons and they open and modify every single one for strength and to try to prevent them from being "Removed" from the mounts. There is not a lot of anything solid to work with there.
Also I mainly use a 17" High Res Macbook Pro about 1' from my face for all the reasons I mentioned earlier which you then seemed to echo.
Just the post practical solution I have found in the confines of the Egg.
It is a simple matter to hang a swing away platform or tray for the machine and then get it directly in front of me when needed and push it away when not.
Hope this had risen to a level that you find helpful in some way at last.