Not a discussion for what is better, It’s what you prefer. But sticking with standard resolutions, will give you more benefits using already designed images.
If you take a different resolution, you either need to be nice to Gelo5, as he seems the only one willing to do this without having a similar screen. Or get crafty with Photoshop or paint.net and draw them yourself. And share them offcoarse. 
But is it easy to built in?
- No, The “landscape” screens have a very small rim, so you need proper equipment if you want to carve an opening in your cabinet about 0.8mm margin to cut or saw… I ended with glue it on my cabinet.
- 2nd they keep on making the same design error. They’ve located the connections on the outer skirt, so you always need a cabinet that stick out for 3 cm above the screen. They expect that the rPi can deliver enough power for the screen, which is a dreamfull state.
The most right one is the power connector, which you can’t bypass with the delivered connector. As the rPi can’t deliver the power. You’ll need a 2nd supply.
