Monitor is super!

Because it seemed to me my old 22 '' 1680x1050 monitor somehow not to be bright enough, I'm looking for a new and possibly gone wider.
I have ordered 2 first 24 '' monitors with Full HD resolution, but with a pixel density 80 PPI I come as an iPad user, somehow not clear. Because my picture is too grainy. This is evident especially in the text.
4K resolution came to me out of the question, since a resolution of 24-25 inches is hyperbole.
That's why I was so happy to discover the Dell U2515H. And at such a good price.
The text looks great!
Visually, the device also 1a, the margins are very narrow (though that's a trick, but OK).
The only thing I can complain about, is the touch buttons, which is not just any man thing, I do not always meet the key that I want to meet. But let's be honest, how many times a person goes to the menu from the monitor, a time? I any case.
And what I can think of: after having shut down his computer, the LED will flash on the screen when someone interferes, then it's got to the On / Off button button.