The Nikon D5100 is a solid camera with excellent photo and video quality, but relatively sluggish performance tarnishes its allure for me. Nikon fixes that in the D5200 with the same new autofocus and metering systems that debuted in the D600, plus an updated higher-end viewfinder, and the result is a noticeably better shooting experience that makes it an excellent choice for all-around family and vacation photography.
The Nikon D5200 makes a great choice for family and vacation photographers.
With excellent photo and video quality for its class; a fluid shooting design and solid feature set; the Nikon D5200 delivers a lot for the money.
Though it has no significant flaws; the lack of an autofocus motor in the body limits your lens-selection flexibility.