ill tell u lot a story....when i went over to amsterdam, there was ALOT of powerful strains, not very famous strains but still very powerful, mainly every coffee shop had a strong strain, like picasso's had 1 called picasso.......had one bong and i was almost out cold 4 a few hours..........amnesia haze, cnt exactly remember where it was from, either barneys, pink floyd or the grasshopper but omg that stuff was literally one hit stuff, me and my brother just managed 2 share a joint of it and we were asleep by 3pm lol :P funny stories but yeh if u go 2 amsterdam look for cannabis around 20-30 euros a gram, then ull soon realise how shit the weed is in ur area :P

peace.