The best I've ever had or grown from either side of the ocean are

1. Big Laughing from drgreenthumb Canada
2. White Widow from the Greenhouse Amsterdam
3. Endless Sky from drgreenthumb Canada
4. AK-47 from Serious Seeds Amsterdam

there are many White Widow and AK-47 knock-offs out there. in order to get the best and original White Widow or AK-47 make sure it comes from the original breeder and not from some wanna-be-breeder-kids with a bit of pollen.

www.greenhouseseeds.nl

www.seriousseeds.com

www.drgreenthumb.com