I'm growing it along with raspberry cough. I love it, but there are too many phenotypes. I thought at first that I got a mixed batch of seeds, but they were all bjs in the end. Sweet seeds? Cool, I'll try that next.
Worst I ever tried by Nirvana was Snow White, shockingly weak phenos.
Nirvana has weak strains with bad phenos and high hermie probability's, now if you are a gambling man and want to take a punt on 20 cheap seeds to get a few reasonable plants, no problem but in the long run go with a reputable breeder, Nirvana is NEVER mention in the same breath.