I'm overwhelmed by the sheer choice of external paints just based on brand alone, what more the different types under each brand! Does anyone have any recommendations or advice?

Thanks!

In advanced countries with similar harsh weather, external walls are tiled. That would be my future choice. 

Thanks! But my place will look weird with tiling

 

Use those stone look alike tiles as a feature wall. 

If really need to paint, ensure design will not let any water to touch the paint surface.