I'm in the market for a new bigger monitor. Right now I use a 22 and a 20. 
I was thinking of adding a 27-30 ish and remove the 20.
 
In my internet quest I come across all kinds of advice and/or opinions.
 
From what I read,
27" and bigger needs 4k resolution.
4k resolution needs a displayport video card.
There are no sub 40" 4k TVs to use as a monitor. 
Bob has 40" and likes it. And, apparently you can use HDMI with a 4k TV.
40" is just too big for me. 
 
This is my video card:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161374
 
I was looking at this monitor:
http://www.bestbuy.com/site/samsung-ud590-series-28-led-4k-uhd-monitor-black/5484022.p?id=1219133600805&skuId=5484022
 
But, would rather spend this kind of money:
http://www.bestbuy.com/site/asus-27-ips-led-hd-monitor-silver/8767178.p?id=1218890757451&skuId=8767178
 
Will standard HD (1920x1080) be NICE on a 27" monitor. ?
 
In other words, what monitor should I get that will work with my video card or do I need a new video card?
 
Thanks

27 full HD should look fine. Text will be larger, everything will appear magnified compared to HD on smaller monitor, but at 27 inches it should not appear overly magnified to the point of pixelated images. If you go a lot larger at HD images may appear pixelated at a close viewing distance. If your smaller monitors are less full HD, then going to full HD will get you more real estate on screen (e.g., more faders across screen) but text may appear smaller depending on relationship between increase in screen size and increase in resolution. A 4k monitor  will get you  roughly 4 times as much real estate on screen. But if screen size is smallish, the text, etc., will appear very small. The screen size diagonal of a 4k monitor has to be double that of a HD monitor to get 4x the real estate at the same text size. IOW, if your 20 inch monitor is full HD, a 40 inch 4k would get you the equivalent of having 4  x 20 inch monitors all on one (rather large) screen. 

I bought the IIyama ProLite X2783HSU-B1 which was cheap and so far has worked great and had no issues with my old Graphics card or my new one.

Ok, thanks guys.

I'm a little confused by the video card spec in the Newegg link.
 
It says max resolution of 2560 x 1600.
 
This seems very limited as compared to the AMD reference card spec.