I started with a D3000 and loved it as an entry level camera. Two years ago I bought the D5200 which never seemed as good somehow. I is now unusable unless I use it in Live View. It has a mirror slap problem which vibrates the sensor. Nikon customer service are not interested and so I will be replacing it. The question is which Nikon camera is reliable? I don’t want mirror slap again but I’m stuck with Nikon as I have many Nikkor lenses. Can’t afford a top end camera. Has anyone any views on the D5500 or D3300?