Jack herrer, Jack the ripper, White widow, Kush, Afghani delight, Northern lights are all really strong strains with equal head and body stone in my opinion.. And i always get a nice potent yield from any one of these strains. If you like more of a "ammonia" (almost the smell of cat pee) type smelling,tasting bud then consider White widow or Afghani delight, a must try!! Or if you like more of a "skunk" taste,smell go with the Kush or Northen lights!! or if you rather more a fruity sweet tasting bud go with Jack the ripper or Jack herrer, both very tasty!! :rasta: