In recent months I have listened to many videos played through AX-Fx, AX8, Helix, Headrush and kemper. All of these systems can produce very beautiful and dynamic sounds, however, when compared to the class sounds obtained with analog amplifiers, you can really feel the difference between the kemper and all the others.
The kemper is still the only digital system that makes me relive the true sound of plexi, vox, bassman, etc. The other systems are perhaps more immediate, have more evolved characteristics, especially in the effects / editor, but their sound seems more distant from the classic analog sounds of the valves.
So I conclude that, for me, there are still no alternative machines to kemper.
I would like to hear the opinion of someone using kemper and other digital instruments.