What would be the most powerful strain?

I'm looking for something very powerful, not worried about yield.
Could some people list some of the most powerful strains(facts) or their opinions of stuff tried, please?
Most likely something over 20% closer to 25% THC.
Thanks

What do you mean by powerful?

world of seeds has some exotic smokes with high THC content but i have no experience with their strains

World of Seeds :: Cannabis seeds around the world :: www.worldofseeds.eu and a cool site

he means summin thas gona knock his socks off..... summin to send him 2sleep within seconds of blazin up...as in power weed couch lock shit

I think supernova, and waikiki queen, are the two most powerful I have found so far : www.amsterdammarijuanaseeds.com

They cost a shitload though, so most likely are very potent. They are powerful medical strains.

the strain ill create within the years muhauhauhauhahauhauh haha

All depends on the grower but I find White Widow, True Super OG, ak47, Bubba, and a variety of others to be the hardest hitting, highest THC yielding, and overall bettter herbs for certain medical issues.

The four I listed are, when grown to their full potential, are my favorite any day...also up their are haze(preferably super silver haze ), skunk #1, NYC or East Coast Sour Diesel, and Purple Durple(the og purple bud).

edit: but if you want even higher THC...just grow a resinous bud like White Russian or a real Kush and use the trim/extra stuff and make hash Its all I usually toke and makes smoking a much more enjoyable time, the smell, taste, and high are all amplified. Going back to smoking the raw plant is gross at first

You should check the grow faq medical link for strains / ailments and find something that suits your needs. The link is right here: GROWFAQ

I hope that help you

-GrowTech

all these strains with stupid names are crazy, how the fuck do you even know there legitimate... You guys should come on down to california and smoke the real shit, but to answer your question anything that is a real kush, hp13, super silver haze, blue dream, green crack, god bud, grand daddy purple, grape ape, purple kush, etc.....

sour deisel or trainwreck would always rock my brain matter

Sour Diesel and Trainwreck are my two favorite strains. White Rhino is strong as fuck and very enjoyable. Neville's Haze is extremely strong but it takes a lot of patience because it takes a long ass time to flower. I've never tried MK ultra but its a cross between OG Kush and G13 so it must be pretty crazy.