,,,There are paper base drivers in the multi thousand price tag speakers as well,,,,
Scan Speak and Morel make awesome paper treated drivers, and so do many other manufacturers I am sure...paper is easy to model and is more predictable, and all more well rounded.
I love paper treated drivers sound (the ones well made and designed of course,,especially for mid and midbass..
I actually have some JBL L-96's which have arguably the best midrange driver ever made, and its paper...