I have been blown away by its reaction time so far. And the picture is phenomenal really.
I bought it because when I bought my 55" Panasonic LED TV, I noticed there was something wrong with my COD MW2 scores and I had no problems getting kills on my 32" Emerson 720p LCD TV at the time.
So the internet brought up Input Lag as a measure of time between the button pressing on your controller to the reaction of the screen changing and I felt ripped off and have been saving up my change since to buy a better TV with less lag.
I bought the Leo bodnar Input Lag Tester and it turned out I was right
I tested my brothers "Sharp Aquos" and it scored an average of 136 ms of input lag. Needless to say we were both pissed. And we both crave a big screen.
After some of the advice of others we sought to buy the biggest screen we could with the lowest amount of input lag.
I would like to test this thing from all angles so if there is a console your fond of or a mode you want to see let me know and I'll test it.
For now here is the Leo Bodnar and Xbone home screen:




