I got the D3300 and love it.
The only difference between D5300 and D3300 is
- 39 AF points vs 11
- built in WiFi and GPS
- Swivel screen vs fixed screen
- Marginally more dots in the screen
On the other hand D3300 is marginally smaller and lighter and comes with a cute 18-55mm VR-II retracting lens, not to mention much lower price.
So if you are not bothered about what the D5300 has to offer above the D3300, get the D3300.