I am now ready to decide.
I will buy either a 24" or 27". If it is 27" I want one with QHD resolution. I understand that discrete pixels are visible for with 27" FHD. If it is 24" I am not sure if I should go for FHD or QHD. Would QHD cause my documents to render too small to read?
Brightness should be decent. My room is adequately bright and there is no direct glare of light sources in the room or from the windows.
Things I would like but it depends on the impact on cost:
1. Thunderbolt USB-C interface preferably with cable included.
2. USB hub for 2 ports
3. Built-in speakers
I am sorry I had started this thread a bit too early. I am ready to buy now.