4:3 display in year 2019 (and beyond)
I have couple of retro-gaming projects that haven't progressed in a while, in a hope that a discussion gives me ideas and motivation I start a general thread of one area they have in common, display. Retro gaming (in general) doesn't know about 16:9, 2,35:1 or similar, it's about 4:3, a display format that is hard to find in decent form these days. So I want to discuss about what is possible and available. (And I do live in EU so that affects the selection little.) The need varies depending on usage but biggest problem is in my opinion size. My projects are for arcade cabinet and (two) Amiga(s) but should discussion arise it shouldn't be restricted to them.
1) LCD monitor.
There are LCD monitors that are 4:3 but largest that I know of (and also have) is only 20" which is kind of small today. And they aren't new anymore.
2) CRT TV
You can find a decent size TV but it's big and bulky, takes lots of space from table or cabinet and requires sturdy structure. In general they tend to have problems in connecting modern equipment which may make using them harder. (For Amiga it wouldn't be (in EU at least), monitor cable has a scart connector that can be fitted directly to a TV.) Age doesn't add desirability either.
3) Rear projection TV
Be it CRT or DLP, in this usage scenario pretty much same as CRT except larger. (And rare, at least where I live.)
4) CRT projector
With enough money and space I would forget a cabinet and build a room where you played with arcade controls using CRT projector but in real world this is sadly obsolete choice.
5) 4:3 LCD/DLP projector
Easy and cheap(ish) way to get decent size picture. Unfortunately requires space and most likely light control which increases impracticality. Models aimed for commercial use so no idea if input lag is suitable for gaming.
6) DIY rear projection display with LCD/DLP projector
I hope that someone more technically capable could say if this is just fantasy or relatively easily doable. I've tinkered with a thought of arcade cabinet with rear projection screen and mirror behind it reflecting image from a projector at the bottom of cabinet. There are projectors that can do 30-40" image from relatively short distance and it would be a simple structure where projector would be easy to replace in case of failure but I'm afraid that it's not as simple as I think.
7) 16:9 TV/monitor masked as a 4:3 display
Easiest solution and source material very widely available. And some (most?) devices can show 4:3 correctly with no or minimal tuning. Only problem is that it takes the space even if sides are masked. That limits the use in arcade cabinet. There solution could be turning display vertically, there is room that way. Resolution will be little odd, 1080*810, don't know if it will create problems if cabinet is based on PC though.
8) Your idea.
What are your thoughts, what is best way to get 4:3 display nowadays?