got my truck back, they had about 6 recalls they did, in addition to the new Radio unit, I did get a new xm trial subscription with. they also put a new battery in truck for me, full service oil change and washed it.
what ive noticed. The FM reception non HD is not noticeably clearer, The HD is aquires quicker.
but the biggest thing ive seen improve is the POWER of the radio to the speakers. its much snappier and the BASS is waayyyy better than before. I keep the volume at quarter way up and you can feel it. the screen is also quicker responsive. so overall I am happy they did it.