Ok, it looks like I need a 1080p monitor.
My current 24" is 1080p, and works great.
Anyone got a deal for a 39" 1080p?
What's other common sizes that are a good bang/buck?
I'm assuming you want all your monitors to be 1080p with HDMI.
Bang-for-buck is subjective to your needs, the distance you will be from the TV, etc, pixel density, etc..
Here's an example of basic, purely based on cost (and ignoring brand, etc...):
26" 1080P monitor = $200 - 84ppi
32" 1080P monitor = $250 - 68ppi
40" 1080P monitor = $350 - 55ppi
50" 1080P monitor = $550 - 44ppi
Other people would rather consider higher resolution.
1080P is 1920x1080 ~ 2.07 Megapixels.
Here's some more examples of what **other** people's needs are:
27" 1440P monitor = 2560x1440 = 3.68MP = $300 - 109ppi
30" 1600P monitor = 2560x1600 = 4.09MP = $700 - 100ppi
39" 2160P monitor = 3840x2160* = 8.29MP = $550 - 113ppi
50" 2160P monitor = 3840x2160* = 8.29MP = $800 - 88ppi
*most 2160P monitors only output @ 30hz.
** all prices subject to availability, moon phase, rotation of the earth, virgin sacrifices, etc...