FSX/P3D. That is till today. Introducing Navidh.se, an indipendant freeware developer who has released a number of decent quality Swedish airfields as well as a few miscellaneous utilities. His latest release is version 3 of his Sky Set 2016 sky textures with updated shadows, haze and reworked sky colors. The package includes an optional sun glow effect. The sky set is intended give a more realistic and natural look especially at dawn and dusk. I'm not sure how this would play with REX so better double check before installing. I will say this, the work looks very good! Thanks to ADX reader Zachary Kerr as always for the tip!