All of my smoking buddies in Cali never stop talking about "purp." If you put something purple in front of them they will buy it up without even smelling it. Ridiculous if you ask me... but I don't grow purp so...
If you really want to start wowing people in Cali you need to go African Sativa. Things with THC-V in it, like a Yunnan Valley Landrace, or Durban Poison, will develop a name for themselves. Personally I plan on breeding Durban Poison with Skunk, Blueberry, and Trainwreck genetics early next year and picking a favorite.
Durban Poison does have purple influences too. The high is unlike anything on the market.There is no ceiling, you just keep getting higher and higher. The kind of bud that will make people pass up taking another hit off the blunt.
I think people are moving away from the mild/fuel/sweet smell and wanting more of that old school pine scent also. Any time someone breaks out that piney weed the whole room stops to ask what it is that's stinking the place up so bad.
Of all the purples though, steer clear of GDP. I've never found it to be a good strain. Just something an idiot could spend all day smoking through grams of trying to get higher.
THCV is a THC antagonist, it does not get you high.
Durban Poison is a variety I developed in Calif back in the 70's but it is no where as strong as other varieties like Original Haze.
But in the end it is about what you prefer, whatever it is.
-SamS