I had organically grown NL #5 at Sensi Coffeeshop in Amsterdam. I think that´s as close to "real" Northern Lights as you can get...anyway, the smoke was good, the high was quite strong, but I´m not really a fan of the scent and flavor. I´ve tried other Northern Lights and other coffeeshops, but the one at Sensi was probably the best. Even so, I wouldn´t bother growing it, since Im not that fond of it anyway. Theres better weed out there, imo...
Same goes for WW...I´ve had it from many different places, and was never overly impressed with it. The smell and taste of it are just not my thing, and the high isn´t strong enough to make it worth my while. Having said that, I never actually had the original White Widdow (called Black Widdow now...) so I don´t kow what thats like.
If I had to pick one of the two, I guess I´d go for NL if it´s #5 from Sensi.