Currently - I got a proline 24" (primary) and a acer 18" (secondary). These sizes just work for me.
As I said I want a third now, so probably get a samsung or another proline (had zero issues with this brand). Maybe a 27" or another 24".
Brands and models - I have no idea - lol. I favour proline and samsung.
Agreed, I care nothing for looks. I care about longevity and functionality.
I'm lucky, I get most of my pc stuff for cost thanks to my brother-in-law.