I've recently heard the Alto Utopias and they are impressive, but, when talking about a speaker that large and expensive, I wouldn't recommend making any decision based on comments you receive here. You really have to get them in your home and make sure your room is appropriate as well as your associated equipment.
For example, when I listened to them, I heard them with 3 different amps (all high quality) in the same room and the results were significantly different each time - some very good and some not so good.
Sorry not to be more help to your specific question, but I will say if you are looking at French speakers comparable to the B&W CDM series, I would look at the Cabasse models. They are less expensive and less hyped, but much better to my ears.
For example, when I listened to them, I heard them with 3 different amps (all high quality) in the same room and the results were significantly different each time - some very good and some not so good.
Sorry not to be more help to your specific question, but I will say if you are looking at French speakers comparable to the B&W CDM series, I would look at the Cabasse models. They are less expensive and less hyped, but much better to my ears.