sorry about the double post. I can't explain or defend it.
the strongest I've had is definitely Alaskan TF. Best all around would have to be northern lights. easy to grow, singular taste and smell, strong enough that I never get sick of it.
....Then this awesome plant sprung up from Nirvana's indoor mix with 5 different strains. they don't label the seeds, so i don't really know. Possibly Master Kush? It had the stature of an indica but the leaves of a sativa. The buds have a small volume and the top cola was narrow, but the buds were so thick with resin and slow-burning, it compensates. Has a piney, spicy smell and a fruitier taste.