Y No YG ?

Did not hear any resonance, it may very well be the room you were in.
Small 2-ways, that will go low, can’t  be efficient. As far as Fritz, I will only say that I am done with paper cones and silk domes. Once you move away from that lack of transparency, there is no going back.

The room I was in was the Magico demo room. I find the S1s to be probably among the worst value of the Magico line, and they sound chesty, congested.

Fritz uses Scanspeak Revelators composite drivers (among others) and to my ears and that of many others, the Scanspeak Revelator mid-woofers are among the best in the world. YG, Wilson, Gamut and others agree.

The cut paper drivers are much more than merely paper drivers.

Not my experience, and cut paper is still paper (only cut ;)). Similar drivers on the Wilson models, not my cup of tee (and in an MDF box, no thanks). I am a recording artist; I need to hear what I am doing, not to beautify (mask) everything. Sorry, we will have to agree to disagree.

You don’t have to like paper drivers, or Scanspeak drivers, but calling a composite a paper driver does them a disservice. They are lightweight, strong, resonance free and low distortion, not to mention when properly used, very flat.

Again, personal taste is what this hobby is about, so I'll not attempt to insist like the sound. :)

Please don't put words in my mouth, I do not like  paper drivers. Composite can mean many things, CF sandwich cones, like the Magico cones, are also a composite.