Amiga 1200 or Sexy Amiga

[paul1981]

1280×400i, is one of the resolutions that is stated on Wikipedia.
https://en.wikipedia.org/wiki/Amiga_1200
How does one make good use of such a resolution?
Would one use a  monitor of the same aspect ratio?

You can use 1024x768 in up to 256 colours or HAM8 - but it is interlaced at that, so a flicker fixer / Indivision comes in handy there. See below link:

http://aminet.net/package/driver/moni/HighGFX40_6