Love me some northern lights, I actually just ordered some seeds from supremeseeds ZAMBEZA Seeds Northern Lights XL. I have been doing a lot of research on faster strains and found the NL XL, Bubba's Gift, Critical Bilbo all ripen within 50-60 days and prefer growing strains that are ready by then so I can move a new cycle of plants out since I grow perpetually 6 15 gal plants per/month.
Those are some good genetics, very frosty, NL can be hit and miss to find a frosty phenotype.