Well... I'm glad myself. As I did not like the 4.7 version that much because of some downsides (4.8 fixes all of them) I was messing around with other concepts and tried my own clouds system but I never get this feeling of correct clouds placement, feeling for the distance and position of the clouds in the air I always experienced with SkyMaxx Pro. I don't know what's the magic here but SMP is the only cloud concept (not only in the X-Plane space of things but globally) giving me this kind of volumetric feel. Performance is fine since the 4.7 performance boost, not the fastest available (modified default clouds even with high res textures are slightly faster) but very close.
:-)