I've been doing a bit of PG SKIES maintenance and thought I would update one of my favourites, 0743 Cloudy Morning Sun. In this update there are several versions of the HDR; the original, plus two with a new sun intensity. Try them all and use the one that suits your scene best is the official advice!
Here is a comparison of them, all at gamma 1.0
And also a 360 panorama, as its a great way of seeing the whole sky.