Whether the Razz is better than the CW IV, which is questionable, I do agree, that Greg Roberts is a master. So was PWK, whose original Heritage designs were adapted by Greg ( the Lascala, in particular ). What I will say, is that once a person lives with a properly designed horn speaker, it might be hard to go back to a conventional design, as there are attributes to horns, that cannot be duplicated elsewhere. If these attributes are appreciated by the listener, again, there is no going back. Be well, all, and enjoy !