Dell inspiron 7520 (15r special edition)

Hi all,

Looking for some advice, having ordered this unit thinking I was getting the 1080p panel but instead it has the 1366x768 display. Now the specs otherwise are ideal, however I have heard nothing but bad things about this display, it has low contrast, poor brightness, weak colours. 

I phoned to try and upgrade my ordered unit, still in pre production, but was told it isn't an option. So, just how BAD is this display? anyone that's had any experience of it would be helpful. I'm on the verge of cancelling and ordering elsewhere if it is truly awful. Thanks for any help in advance.