I have a 24 inch monitor. I feel that this is the smallest I would feel comfortable on doing what I am doing.
[With that said, I also do Rhino at my local coffee shop on a 13" laptop : ) With V5s nice menus, it’s possible, but it’s still a little cramped.]
I used my friends 30" Dell IPS 3K 100% Adobe Gamut monitor for two weeks. 30" is a nice luxury, as I can open palettes and they don’t get in my way, unless I roll my chair closer to have a look.
Currently, 27" monitors are a good price-point. A medium resolution 1920x1080 one can be had for $260, with the 3K ones about $500-$600.
I will not buy monitors that are not IPS/PSL unless something better comes along. I would not get something that is not LED backlit either. My old 24" cold-cathode backlit monitor takes 300 watts, a new 27" monitor about 30 watts.
Samsung, Viewsonic, and the high-end Dell monitors are good. Many Samsung monitors have a zero dead-pixel warranty. I do not understand what Samsung was thinking for some of their monitor stands/cases.
I’ve seen people Photoshop on a 4K TV/Monitor. Nice.
The more pixels you have the more your video card needs to work when you work.