***Correction***: I meant to state BTB not BTW. BTB is Black-To-Black which is the old standard to measure the response time basically it measures the time it takes for a pixel to go from completely off (black) to completely on (white), then back to completely off.
The following rebuttal is for the benefit of everyone who wants to understand what
asanatheist and myself are debating about.
1. I am saying BTB is no longer used. All manufacturers have been using GTG as a measure of response time whether they state it or not in the specs. BTB (which I agree is the better measure) has been phased out several years ago in favor of GTG because they (the brands) can advertise "lower numbers".
You should only say a monitor's response time is 5ms BTW if they actually state BTW. For independent verification go to www.hardforum.com and post a question regarding whether BTW is currently used by any company as a measure of response time. The "Display" section of that forum is far more active than this THG and there are many active posters there who are at least as knowledgeable of LCD technology as myself (I too am an active poster there).
2. As stated in layman's terms TFT = LCD (for all intent and purposes). It does not mean the coating is matte or glossy which is what you seem to be implying when you stated TFT is better than glossy. Current LCD panel technology are basically classified as TN, VA and IPS.
Again, here is a link regarding LCD (TFT) monitor specs:
http://www.tftcentral.co.uk/specs.htm
If you want to discuss the "technicalities" between TFT and LCD then you can start a separate thread about, but honestly the technicalities will simply add even more confusion to a "generic" technology that has most people baffled to begin with.
3. Input lag and response time are two different animals. Completely different.
Input lag = The amount of time it takes the monitor to "register" movements you make with your mouse, gamepad, keyboard. Basically it takes time for the CPU to process the input, then send those commands to the video card to reflect the movement to be transmitted to the LCD monitor. It takes a little bit of time for the video card to transfer the video signal to the monitor's electronics which in turn take a little bit of time to represent that data stream from the video card onto the LCD screen itself.
See below link regarding what input lag is; the article is called "Exploring Input Lag Inside and Out":
http://www.anandtech.com/video/showdoc.aspx?i=3601
Response Time = The time it takes to for colors to change from one color to another. Response times are not always "as stated" there are variations that arise due to what is being displayed on the screen. Therefore, LCD monitors can have higher response times than stated and average users cannot tell the difference for the most part. Response times are actually difficult to measure because external hardware is required to measure response times, meaning there is no software that can be installed on the computer that can do this it is simply impossible.
To the general posters and lurkers, I already explained concisely what BTB is at the very top of the post. GTG (grey to grey) response time is lower than BTB (which manufacturers love to use to advertise) because the pixel is already lit up to some degree, so all that really needs to be done is simply change the color and decrease/increase the color.
Therefore, if I advertise Monitor A as having BTB response times of 20ms and Monitor B as having GTG response times of 5ms which one would you buy? What if I told you Monitors A and B are exactly the same but with different advertised spec?