One scene I quickly put together using Kitbash 3D assets to test K-Cycles. I had heard about K-Cycles for a while, but only recently decided to give it a try, and I regret not using it sooner. The most valuable aspect of K-Cycles for me is its ability to do tone-mapping and post-processing directly in its viewport. I find it to be just as good as V-Ray, and the mist pass is a time-saving feature that can replace volumetrics in many cases.
The bloom and anamorphic glare effects in this render are all done using K-Cycles, without the need for any additional post-processing in Photoshop. As for the lens dust, I used the Cam FX add-on.