I have actually tried Edea Rotation, on a pair of borrowed Overtures. The owner borrowed my boots with MK Phantoms and, whilst she said that they were scarily fast, she managed to skate round the rink very nicely. I, however, took literally two steps on the ice on the Rotations and got off again. Those things are the nastiest blades on the planet. I'm sure some people can make them work but many more beginners struggle without knowing why. I would put a beginner in Coronation Ace rather than Edea Rotation, although I'd rather they started with something else between the two.Edea rotation blades are terrible in my experience, but I have coached beginners who have been able to skate really fast on them as well (not even scratching). They struggled with spins (that improved after adjusting to CA).
I wouldn't recommend peopleusing Edea Rotation, but with very refined technique you can get them to work (I still wouldn't put a skater in them, even at a beginner level Coronation Ace for me is the much better choice).