Im a purple fan myself. I dont know the ancestry makeup but in my opinion the best purple is Lavender. If what u say is true about the other purps being hybrids/crosses that explains to me why I always thought that Lavender was the "real" purple that I think is the best! To me , I dont care for purple Kush, it just aint the same smell and flavor as the other purps.

If you can find it try Lavender, u wont be dissapointed