MayDay,
As you can imagine, there is a lot of personal preference which drives the individual choices made by "us techies." When the funds are coming from the family finances (W2 employee) rather than the employers, choices tend to be more economical. Even when self-employed where I can expense a purchase before taxes, I skew more economical.
Most of us enginerds have optimized on using 2 each of 24 inch monitors (1920x1080) monitors rather than one larger monitor. Decent versions of these monitors typically fall in the $130-150 for a IPS LCD monitor with LED backlight. These monitors typically have HDMI, VGA and DisplayPort inputs. Cabling and interfacing remains relatively simple and cheap, and most modern desktop and notebook computers support dual monitor configurations at these resolutions.
A 32 inch monitor with a 1920x1080 resolution will have large pixels / dots. These monitors are primarily targeted to casual home use and PC gamers. This monitor would generally not be acceptable for all-day use for technical work.
A higher resolution 30 - 32 inch monitor gets pricey, and the choice of video interface and cabling becomes more specific. At this level, you are looking at a $350-500 monitor and using a DisplayPort video interface.
27 inch monitors fall in the 'in between' range for resolution. Personally, I would just want a higher resolution than 1920x1080 at 27 inch, and I don't like spending the $$ to get the higher resolution.