For gaming or really anything 8 Ms and under will do you a world of good. For PC monitors they tend to support up to 120Hz but TV's for some reason lag behind, at 60Hz(except now some are coming out at 120Hz Samsung comes to mind)
The brightness on the TV is fine, but you got a low contrast which tends to give a hit to the trueness of the color reproduced(some 2008 model LCD screens have 30,000 : 1 contrast) personally I wouldn't go below 5,000:1 it does make the difference.
# Soft picture and no harm to your eyes
Why do companies still brag? LCD and really most progressive displays are less harmful to yours eyes, they get rid of the flicker that you can't really notice but it does affect your eyes.
Things to look for when buying an LCD TV:
Tuner type combo/digital only/both
Contrast ratio, there's no standard but the higher the ratio the better(mines 8,000:1)
Does it have HDMI, Component or any other connections you may want and how many?
Is there a Game Mode? Most lag on Digital TV's is from scaling and while some PS3 or 360 games may be put out in true HD(not upscaled) most are not and it takes time for your TV to process this. Game mode filters some of the process out to reduce lag if it isn't on the TV you probably will experience lag regardless of how good the TV may or may not be.
Edit: Also as a note, it displays 1080i/p content but it's basically a 760p(not a real resolution but it is a bit higher than 720p) panel judging by the 1366x768 resolution.
1080p/i won't really make a difference in anything other than games to be honest... an LCD by nature is progressive and will put your interlaced picture together and display it as a solid picture. Progressive is 60 full frames per second Interlaced is 60 1/2 frames per second(30 full) but the TV LCD Plasma etc will take the half frames and put them together you end up with 30 Frames per second which is more than any content is filmed in.(movies TV etc are filmed in 24 Frames thus the 3:2 pulldown and the 24fps option on some bluray players.)
However a 1080p set(as in the sets native resolution is 1080p) tend to have denser pixels making a better picture and 60 frames per second will yield benefit while playing video games or using a PC not so much for movies or TV that's more in the realm of the response time.
