The White. Lately it's been cheap and strong as hell where I live.
If we're talking favorite of all time, I've gotta say the Chocolate Thai that was floating around SoCal in the mid 90's. I'm still not sure if the plant grew like that of if the weed was dusted with cocoa or something. All I know is that my buddy was getting quarter pounds of it for a few months, then we never saw it again. That's the strain I want to find the most.