There is no one best manufacturer or best speaker, it's completely subjective. Also, so much depends on the amp(s), preamp and source when demoing.
All that said, a few years back when looking for my next speaker the top of my list included Magico S3, Evolution Acoustics MM3, Vandersteen 7 and Vivid Audio Giya G2. After extensive listening I purchased the Vivids. I could have likely lived happily with the Vandersteens also. Some months later I had the opportunity to hear the Magico M3s and they are very, very good. They might just be my next speaker.