Unfortunately, you are going to have to listen for yourself. No one can honestly compare two (really) Technolgies. Within each one of them, the differences are going to be all over the place. @ricevs is right. Pick two within your budget (one of each) and see which one pleases you the most. That might point you to one direction or another. Implementation is going to be a big factor. You might have to read a lot of reviews to get an idea which flavor is more to your liking. I had the same conundrums and ended with a GaN one. Still happy with my choice.
Purifi v Gan amps?
Has anyone had the opportunity to compare Purifi based amps eg MarchP422, Purifi etc with Gan amps such as LSA Voyager or Peachtree Gan 400 or similar?