Calibrating my Samsung TV with xbox one HELP!

Hey everyone,

So I spent hours trying to find the best 40'' tv with the least amount of input lag. I made the decision that the Samsung UN40EH5300 it's a 1080p 60hz 40'' TV.

I've been fiddling around with the calibration on xbox one where it walks you through a few pages to get the best picture ( Closed eye, open eye, etc... )

I have my settings at 36 frames , PC ( RGB FULL ) , 1080P.

Yet I can't see the " closed eye " ever. Even when I make my TV as bright as possible. Are some TV's just not able to see the closed eye? I know some tv's can't display the sun but what about the closed eye? I did everything the menu said as well " HDMI Black level" "Black input" I tried every single variety of settings with my tv.

Also the TV just looks... mediocre like I wasn't amazed at how great battlefield 4 or Forza looked. My 20'' 4 year old Dell monitor seems to have nicer colors. Is that normal? is " game mode " killing my picture quality?

So my questions are:

1.Does " game mode " just kill the picture quality and I should live with it?

2. Does it matter if I can or can't see the eye and the sun and just set the TV settings to what I think is nice ( I usually have my settings extremely bright and colorful to the point where my eyes almost bleed )

3. Is there a better 40'' TV? ( not a Vizio or mitsubishi or subaru I want a legit brand )