High def display - recommendations

I am starting a new demo project and looking for recommendations for a high definition display ideally about 3inch, does not need to be touch screen. I know there are loads of displays compatible for Ardunio, but I would like to understand if there any recommendations it does not need to have a shield.

Something like a mobile phone display would be perfect, but not sure if/how if you can buy them and then it's the electrical interface to the arduino

I appreciate any ideas and suggestions

For arduino UNO/MEGA



Gameduino 2