Definitely agree about that comment on the liquid Dynamo. Its mucous-y in consistency!
I think we did use the Sard powder for a while. Cannot recall the smell. Just another one for the list!
When I use the Radiant liquid for a Darks wash, I always dilute it with (preferably) warm water in a plastic cup. Since the Miele doesn't have the liquid dispenser fitted, I just dump it in the "Main-Wash" one at the right time, and all is well.
Even using 1/2 the dosage - it gets bubbly with a medium load. The rinses are like a "Bubble-Bomb" in the bath!