particular gaming monitor or brand that helps reduce lag

I'm trying to increase my sniping efficiency and overall K/D. It would be nice to minimize as much lag as possible. Right now I'm on a 46 inch and I'm pretty sure there's a good visual delay. Also do you recommend a particular size that's not too small but not too big for PvP. I figure you don't want to be squinting to see your oppomets but you also don't want to look to far from the center of your screen to your radar.  LCD Inverter Kit PCB For TDK CXA-0374 PCU-P159A

*edit: A couple of users have asked

I know everyone talks about gaming monitors having 1-5ms but what do TVs have on average? I'm using a 42" LCD 1080p TV 

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that's around 8 years old but still kicking. Would it really make that much of a difference?

Does this suddenly make you an all-star? Nope. But it goes a long way in improving some bad habits.

The simple fact of having a smaller and higher rez display makes you much more aware of your surrounding, which is crucial.
You begin to get desensitized to all the fancy things these monitors can do after awhile but the

minimal input lag is obviously great. I could not believe I played on a TV for as long as I did.
 I got the same monitor Touch Screen Digitizer For Acer E100 E101 C1 Tactile a few months ago. It helped a lot. The only problem I had was when I went

on vacation to my in laws and had to go back to playing on a 55" 'smart' tv. It just felt so laggy

and slow.

I don't know if it has "game mode" I know in the visual settings there is a game setting along with a movie setting and sports setting. I always choose the vivid display because the colors are intense and I think it looks super nice. Especially when I'm watching sports and other programs filmed live. It looks great for story modes too. But I'm sure it's not the best for PvP
Modern nice expensive TVs have a great deal of post processing built in. That's where much of the input lag comes from. A well implemented game mode will bypass most or all post processing. In my experience, and most tests, it does. If you really want to get into it you can read the methodology and explanations at displaylag.com. Of course the gain, if any, will depend upon the specific model you are dealing with.

I play on a 70" LED Touch Screen Digitizer For Acer be Touch E110 Tactile. I snipe just fine. It may be better to play on a smaller screen; but damn it, I have a huge TV, I'm going to use it.

i can strongly recommend the "eizo foris f2333" - it is/ was a bit heavy on the price when i bought it a few years ago, but well worth it and your can somehow feel the quality...
i had the chance to compare it to many gaming monitors from my friends and we came to the conclusion that the foris was the best one. It has some nice gaming related features as well and an input lag of 2 ms....their might be a new version of there gaming monitor Garmin ASUS A10 LCD Screen Display Panel  series...invest once and and have no problems for the next 8-10 years...
i would recommend a size of 21-23 inch(?) max.
e: grammer

Highly recommend Benq RL2455. It's not expensive and perfect fit for consoles (too slow for PC).
Also, various websites have measured it's response time and documented the settings to reduce motion lag.
Note motion lag is due to your eye movements on newer LCD screens Touch Screen Digitizer Glass Panel that has a fast refresh. See displaylag.com for more info. (I am not affiliated with them)
I run a BenQ but they are expensive. Most gaming monitors will do though. Just make sure you actually do your research. Most people think response time refers to input lag, but response time is the time it takes the color to change (blur). Not the time it takes for your screen Samsung Galaxy S3 SIII i9300 Protective Glass Camera  to show your input.
ASUS are very good, I have one and I love it. Forget about Game mode, all it does it adjust the brightness, contrast etc and that's it (with monitors... TV's are a different matter). Consoles cannot make use of gaming button gadgets. What you want to look out for is the response time. You want 1ms and no higher. Also the ps4 runs at 60 herts and 1080p so there is no point in buying a 4k monitor with 144 herts refresh as it will be down sampling. Mine is a 27" and I sit 2.5 ft away from it.
Not necessarily. If I gave you an F1 car, would you drive any better than in a Mustang? Likely not. You wouldn't be able to take advantage of the available power and handling. Same goes here. Especially so with monitors Eten Glofiish DX900 Touch Screen Digitizer Tactile  with higher than 60Hz refresh rates because the console simply doesn't even render higher than that.
TN is Twisted Nematic. IPS is In Plane Switching. PLS is Plane To Line Switching. VA is Vertical Alignment.
The important ones are TN, IPS, and PLS with IPS and PLS being nearly identical for this topic.
What you get with TN is superior refresh rates and black representation (light shining through the pixels can simply be turned off for true black). What you get with IPS/PLS is crystal clear accuracy in color representation (except black because the lights cannot be turned off) and superior viewing angles (178°).
There are other nuances, but for amateur gaming, an IPS/PLS monitor LCD Touch Screen Digitizer For Garmin Oregon 200 300  is superior due to its other advances in technology. You will never notice the difference between 1ms and 3ms response times, nor will the slight difference in black representation impact your gaming.

No brand is really better than the others. Most, in fact, use the same screens and just have different housings.
All you're really going to need is good contrast (for spotting players) and response times (for lower input lag) on a 1080p monitor LCD Touch Screen Digitizer For Garmin Oregon 450 500  with minimum 60Hz refresh rate. Xbox One and PS4 will never need more because they will never output more. Most run 720p 30fps anyhow.
There're some nuances among TN, IPS, PLS, and VA. For those of us who aren't professional gamers, an IPS or PLS monitor will be perfect for everyday use with excellent color representation with slightly worse contrast. If you happen to be AEGabriel tier or play as a professional CS:GO player, a TN panel is your better bet.

I played on a 60" TV and even though I tried, Crucible wasn't enjoyable. I bought a 27" BenQ monitor and I noticed and instant improvement. Like others say it doesn't make you a god overnight. The smaller screen Touch Screen Digitizer For TomTom tom XXL IQ 5-inch  and sitting closer seem like huge benefits for me. I haven't played on my big TV since.