My choice was finally made on the D5300 that perfectly meets my expectations. Case fairly light, good grip.
Excellent reactivity (it has to come from the processor)! Quick access to important camera functions easily (diaphragm, iso, balance etc ...)
I use this camera with a Nikon 18-300 f / 3.5-5.6, but also with a Tamron 10-24 3.5-4.5. For pro it is certainly worse than its equivalent at Nikon, but for an amateur like me who wanted a wide angle, it nikel and 3 times cheaper than the Nikkor ....
I recommend this device to all lovers who simply want to keep the automatic settings and then evolve into manual mode and thus make photos more beautiful :)