I've had good luck with all but one grow off nirvana seeds. Have grown white widow,white rhino,Ak48,B52 and Ice...Ice was the worse all germed and not one cracked.. Got the B52 and Ice from Nirvana shop..The others form the the Bay..All from seedbay popped and were sweet plants. Can't say the same from nivana. Got maybe 6 0r 7 females from the b52 with 1 keeper and that was the last seed in the pack i germed. So can't complain. The Rhino , widow and Ak48 were top notch for me, no hermies ever and the sweetest ,crystal cover buds ever and swear it all 3 smelt of cherries..