I suspect that's the root of the problem for most of us. There's always something new that you want to try first.
So far, I've only explored one small area of the universe, almost all of them sativas. I've tried every Brazilian I could find, though - got that locked down. I've done landrace Panama and a Guatemalan Haze, and I would expect southern Mexican to be similar ... I've had Highland Mexican from the Destroyer and DrG ... ... so I've done a pretty good job on the American strains so far.
Now I'll see what Sour Diesels are like. But the stuff coming from some of the newer houses is hard to turn down. I see some of that Dynasty and Rare Dankness gear, and I get all distracted and want to chase that.
(Heheh, I suddenly remembered what it was like to be a much younger man. :
I've posted it a couple other places, but speaking of universes, y'all should check out Phylos Galaxy.
[Edit] I realize now that I only bought/chose 16 of those strains - the rest were freebies.
Graytail, you absolutely should grab some Dynastygenetics gear. I would love to see you run some of their sativa hybrids like Ms. Universe, Megafauna, Bluniverse or Pineapple fields! Best breeder I have found to date!