Moniter question?

i was wondering just how big of a differnece a 7ms moniter to a 2 or 5 moniter would be and which is the best and would you really notice a difference.

alos if yous have any links to videos comparing these that would be great. thanks

Unless your a pro FPS player then I would doubt you  would notice the difference between the 5 and the 2ms monitors. The 7ms would most likely be fine to if your a causal gamer