If it's last year model. I would sell it. This year's model has improved contrast and lighter background. I can't sell mine due to the stains on back and poor contrast but I have the this year's model which I am in totally in love with, My K3 which I just compenscated back from Hubby

and my Kindle Fire.
I have plans to get either KFHD or PW soon.

My K4S will just sit around.