Need assistance replacing my 37" LCD

[IanBadeer]

I've been using a Westinghouse 37" LVM-37w3se for years on my PC, and it's been a good monitor for what I paid, but it now has gigantic blotch on the right side of the screen that can be seen on any light background, so it's time to be re-purposed.

I want to replace my current LCD with an LED of a similar size that is also 1080p (no 1440p for me), but need some help narrowing down my options.

Details:
Used as my main monitor on my PC over DVI
Secondary monitor is a 19" Samsung over DVI
nVidia GTX570 Video Card
Casual gamer on CS:GO and tons of other FPS titles
Also used as primary for watching blu-rays and Netflix

I'd like to go to a 120hz monitor, because I've heard that that will help with gaming on CSGO, but I'm not so hardcore as to go buy a 120Hz CRT to help with one game, this is my total entertainment system here.

My budget is $400-$600, and my goal is a monitor of similar size but better quality and more accurate colors and contrast then my current low-end Westinghouse.

Advice?

 

[IanBadeer]

I'm looking at the Samsung UN40FH6030, which is $496 on amazon right now. Digital trends show that it's terrible with blacks (just like my Westinghouse), and that's also only a good experience if you're front and center with the TV, which I will be since it would be a computer monitor. Thoughts?

http://www.digitaltrends.com/tv-reviews/samsung-un40fh6030-review/