The 2014 already took the hit on its initial depreciation. You will take the hit on the new 2015. So money wise the 2014 would be a better option if the truck meets your needs. I drive a GMC but from what I've heard is the PSD 6.7 is a good engine. I would love to have one as a they look awesome but wife will not let buy another Ford after the last two had major issues. Don't hesitate too long on the 2014, if it is the same here it will go fast. Good luck and happy camping.
2008 GMC Sierra 3500 SLT DRW D/A 4x4 (Big All)
2006 Ford F350 PSD SRW King Ranch 4x4 (Henry) (Sold)
B&W Companion, 90 Aux Fuel Tank, Scan Gauge II, Curt f/m hitch, Swagman XC
2015 Forest River Sierra 360 PDEK
DW Diane, DS Michael, FB Draco and Sabian