I currently have the Sophia 3's. I have had paradigm S8, B&W 801 Matrix S2, and B&W 800 d2 prior to the Sophia 3.
The S8 was great value for the price. Very happy with those speakers.
The Matrix was my first speakers into the high end speakers way back. They sounded great and still remember when I first listened to those speakers.
I had the 800 d2 for a short time before I was able to get my hands on the Sophia 3. The sophia 3 in my opinion presents a better wider sound stage than the 800 d2 and a little more bass. It is in my opinion more well rounded. I was able to hear the Sophia 2 at a friends home prior to the Sophia 3 and from what I got from it was that the Sophia 3 sounded just a little more balanced.
I have also listened to the Magico S3 and while nice they don't sound like a big speaker like the Sophia 3 and compare more to the Sabrina.