My experience has been as follows: I got older and kept being Bambi to all the younger punks. I watched my oldest playing games and stood there asking him (he is quite good) how the hell he saw some of the ones he head shot... I knew he wasn't running any Bot or hacks.. was all skill. I watched and couldn't "see" what he saw. He was able to pick out targets literally as small as 4 pixels being different and I was standing right near him watching.
I then got my first view of a true 120Hz monitor, and seeing the 'details' that one can notice especially on MOVEMENT made target acquisition a hell lot easier. Now my wife wanted to save for a nice 30+ Inch TV, and hook her laptop to it, so we got the TV, a Vizio 32inch and I hooked up my PC to it to test it out first (heh) playing DOOM 3. Now this was cool, but at 60Hz didn't make it easier (as I hoped) to see the targets, and for normal 'use' it sucked to me having everything so HUGE. My wife on the other hand was like "FINALLY I CAN SEE!". So she got her laptop hooked to it full time and she uses it as a large monitor at 1080P 60Hz, with a simple off the shelf i5 Based laptop (no SLI needed or gaming level dedicated card).
I got my Acer GD235Hz 120Hz 23in screen, which I play with my old Alienware m17x R2 on (modded with a GTX 670M HEH!). On the old titles, to say my game play 'improved' was a understatement, as I started to get damn good as I could spot people now reasonably and play 'well' enough to enjoy the games when HAX weren't killing the MultiPlayer experiance. As my system got long in the tooth, and my display degraded (I keep down at 100Hz because I have issues at higher) I was looking at 'What is out there' and I think your information is quite... OLD.
1440's came and left, they are DEAD because we had 4K (and now 6K!!!OMG) suddenly take center stage and push the 1440s to the grave real fast. Now 1080P is the STANDARD for any display normally, but now with 4K displays things changed drastically with now 3840x2160 resolution aka 2160P displays (2x the standard as you can see) and no LESS then a 40" display like this 'cheap' example
http://www.overstock.com/Electronics/TCL-50-inch-4K-Ultra-HD120Hz-Smart-LED-TV/9291407/product.html?refccid=HHJMDXRITQIYPE2EICGRX5YS6A&searchidx=7 for only $872 !
Wait, what? How the hell do I put a 50inch on my desk - YOU DON"T , no one has a desktop PC anymore didn't you hear? Yes with sales constant of 3+ Laptop / portable devices sold against 1 desktop, desktops are 'not the focus' of being tied to the desktop, but now the 'TV' is the Entertainment center. So even if you did hook a PC to this, you would be using a wireless mouse / keyboard to 'play' or as 90% of the market does get a 'Controller' for the PC (EWWWW my knuckles too much PAIN!!) and no need to be 'tied to the desk'.
As you can see there is a gap in the market place.. and while 'curved' screens tried to make inroads the problem was price... price.. and price.
So here is the 'middleground': UW (Ultra Wide) LCDs
http://www.overstock.com/Electronics/LG-25UM55-P-25-LED-LCD-Monitor-21-9-5-ms/9379702/product.html sporting 2560 x 1080 or a 21:9 ratio. The advantage is the large visual area one gets, still a nice size to fit on the desk (25" LCD) AND the screen splits into three nice displays, so one can look at a original document, work on a WiP document, and still have the last 1/3 of the screen open for IMs, Emails, Websurfing, etc. with NO OVERLAP, hiding screens etc. Basically it fulfills alot of people (like myself) demands for a dual screen type layout, without the 'split' in the middle, nor the DOUBLE cost to getting 2 screens, never mind the proper video card to support this. Personally the price point just nails is, as compared to the rest.
So it comes down to what YOU need / expect. If like my wife you don't mind HUGE letters, then a large screen would be better, and that is the 'norm' for 4K (the standard now). If your liking your personal spaced desk, then a UW will be the best bet to 'fit'... unless you really want to put a 50" screen on your desk that is.