I've owned and shot Nikon's D100, D200, D300, D700, and the D4 (my current work camera) as well as numerous point and shoots and even a mirrorless 4/3rds camera over the last 10 years, so yes, I am biased towards full frame sensors.
Excellent image quality and high ISO performance; Very wide ISO range; Excellent video quality; Light-weight, robust body, weather sealing, lower profile than D800 or D4; Generic scene modes, and programmable U1 and U2 settings; Ittl control for on camera and off-camera Nikon speedlights.
No aperture control in video/live view; new zoom in/out button position makes them feel like they're reversed compared to the D4; 39 point vs 51 point af sensor; max 1/4000th shutter speed; no 10-pin remote terminal but MCDC2 port provides same function with different cable; and dust issues early on