Reply to Numark mixtrack users, how's long term performance

Hi, I am interested in upgrading from a maudio xsession pro to the numark mixtrack. I just want some jog wheels to spin ala cdj again. I also want more navigation of my traktor duo.
My question is to owners of the device is how are you getting along with it?
Should I bother to upgrade or wait for something else? Thank you in advance.