Ok this may get me flamed but here goes anyway[]
My experience with the heritage series is that compared to the RF7 I found the Rf7 to best the Cornwall in the accuracy and imaging department,many will argue that but thats my opinion.we did a blind test at indy between the cornwall 3 and the rf7 and it was a split with 50/50 prefering one over the other.I have owned Corns and lascalas and have always found a bit of bite at high volumes that I just cant handle even with tubes,right now I have settled in with a pair of KG5.5 and prefer the tractrix horn sound.