As a owner of a pair of Cornawll 1's they are lacking in many ways to my VAF and Equinox loudspeakers. But i must say i get a kick out of them all the time, they excite and move me all the time.
As for the reasoning that they are a valve speaker, I'm running my with a Proton D1200 100wpc and everything just gets up and moves.
Im a big fan altho i could not justify a price tag on the new Heritage series, and can help but think they would lack that character that im used to, rather than improving upon it.
but like yourself I'm in Adelaide and since Grenfell HiFi went down i have never seen another Heritage loudspeaker in a local store. (K-Horns they had there