I have grown a few Northern Lights from Nirvana. I am currently on day 64 of flower on my first batch of Jock Horror. So I only have experience with the smoke from Northern Lights.
Let me try to explain my experience. The one thing I can say is the Northern Lights is an OK plant. By that I mean it's not bad, but definitely not great. It's just weed, but very good weed, better than most things I have gotten on the streets in my area though for sure!!
It doesn't smell all that exciting, doesn't taste all that exciting, there is nothing particularly interesting in the way it looks.... it is just a bit mundane..... BUT very good mundane. Let me also say that of the people that have tried it, they LOVED it, said it tasted, smelled great.
I say ALL the above, I should mention it's the only thing I've had from Nirvana, so it could really be great and I just don't know? I'd also mention that the NL from Nirvana is NOT the strain that would stop me from continuing to try something different each time I place an order with Nirvana.
I'll say during the growth, my current Jock Horror definitely looks and smells much more appealing.
Here is a review I wrote if you are interested in reading:
https://www.rollitup.org/smoke-reports/422306-norther-lights-fem-nirvana-pics.html