My main monitor is a 43" 4k.
I would never go back to smaller, although I don't use charts or DOM or anything graphical.
I'm sitting approx. 24" away from it.
May I ask what 43" 4K monitor your currently using? VA or IPS panel? I'm currently using a 32" 2K monitor but have been thinking of going bigger. Does sitting 24" away seem about right for that size?
Thanks,
-Guru