I like me some heavy indicas. Eventually after a while of smoking a sativa it stops doing anything to me while indicas keep going.
GDP, GSC, etc.
With that being said I do like hybrids/sativa dominant strains as well.
I've had Blackjack, Super Silver Haze, Silver Haze, Maui Waui, Blue dream, Bubba kush, Grapefruit, could go on for days about what I've had.